Core Java Bug List

Welcome to the Core Java Bug List

Third (1.1) Edition Bugs

Bugs in multiple editions are denoted by page numbers p3/p2, p3/p2/p1 or p3//p1, where pn is the page number in the nth edition

Volume 1

Page 31 6th line of note

welcomeApplet.java should be welcomeapplet.java

Page 41/39/38

Change "For example, for WinEdit, chose Project|Compile, then chose Project|Run." to "For example, for WinEdit, chose Project|Compile, then chose Project|Execute."

Page 43 line 8

final t of WelcomeApplet is in the wrong font.

Page 44

Remove the sentence "(Note this used an older version ...)"

Page 65/62/60

Change int fourthBit to int fourthBitFromRight .

Page 71

Change the description of String substring(int beginIndex, int endIndex) to "Returns a string which is made up of the part of the original string between beginIndex (inclusive) and endIndex (exclusive)

Page 76/81/80

Several bugs have been reported with versions of the Format class on the CD ROM:

Formatting the most extreme negative number (-9223372036854775808L) printed with 2 leading minus signs.
Printing 0 with a %e or %g format did not work.
Printing numbers that were closer to 1 than the number of requested decimal places rounded down rather than up, e.g. formatting 1.999 with %.2f printed 1.00. (This one is pretty serious, of course.)
Printing with precision 0 (e.g %10.0f) didn't work.
Printing a string with a precision that exceeded the string length (e.g. print "Hello" with %20.10s) caused a StringIndexOutOfBounds error.

These are fixed in Format.java

Page 78/69 Mortgage.java

Code for mortgage calculator does not match printed formula. Code should read: double payment = principal * monthlyInterest / (1 - (1 / (Math.pow((1 + monthlyInterest), years * 12))));

Page 81

Replace if {yourSales . . . with if (yourSales . . . (2x)

Page 84/74/72

The second box of the graph should read "balance = (balance+payment)*(1+interest)"

Page 93/85/83

Change "In our case, since the method belongs to the lotteryOdds class" to "In our case, since the method belongs to the LotteryOdds class"

Page 99

ppublic ShellShort should be public ShellSort

Page 107

Change "Since this means an object may totally change how it stores its data but, as long as it continues to use the same methods to manipulate the data, no other object will know or care." to " This means an object may totally change how it stores its data but, as long as it continues to use the same methods to manipulate the data, no other object will know or care."

Page 120

The example "dueDate(1999,12,31);" should read "dueDate(1999,11,31);" or "dueDate(1999,Calendar.DECEMBER,31);"

Page 123/111/108

Change: "Please enter the month..." to "Please enter the month you were born, ..."

Page 127

Remove

public String getName()
{  return name;
}

Page 129

Change"this class has five methods, whose headers look like this:" to "this class has four methods, whose headers look like this:". Remove the line public String getName().

Page 130

Change "The new method is always used together with a constructor to create the class" to "The new method is always used together with a constructor to create an object of the class"

Page 132/119

"name - n;" should be "name = n;"

Page 132

Before the paragraph starting with "Of the remaining methods in this class, the most interesting is the one that returns the year hired...", add the following paragraph: "The raiseSalary method is a function with two arguments. The first argument, called the implicit argument is the object of type Employee that appears before the method name. The second argument, the number inside the parentheses after the method name, is an explicit argument . As you can see, the explicit arguments are listed in the function declaration. For example, double byPercent is explicitly listed. The implicit parameter does not appear in the function declaration."

Page 135

Replace "For example, consider a method compare..." with "For example, consider a method equals..."

Page 138

Change "This way, all instances of the randomInteger class can share this information" to "This way, all instances of the RandomIntGenerator class can share this information"

Page 142

Change "For example, many Java classes have a method called toString() that prints out the object." to "For example, many Java classes have a method called toString() that returns a string describing the object."

Page 142

Change "You can print out the current date stored in a date variable by saying this.toString() . . . System.out.println("Customer.computeOverdue: " + this)" to "If you pass any object to the System.out.println method, that method invokes the toString method on the object and prints the resulting string. Therefore, you can print out the current state of the implicit argument of any method as

System.out.println(this);

Page 147

Replace

              public int rank()
              {   if  (value == 1)
                      return 4 * 13 + suit;
                  else
                      return 4 * (value - 1) + suit;
              }

with

              public int rank()
              {   if (value == ACE)
                      return 4 * 13 + suit;
                  else
                      return 4 * (value - 1) + suit;
              }

Page 149

Change GregorianCalendar today = new java.util.GregorianCalendar(); to GregorianCalendar today = new GregorianCalendar();

Page 149/136/130

Reverse order of "c:\jdk\lib\corejava\Console.class" and "c:\jdk\lib\java\util\Console.class"

Page 150/136/130

".\jdk\util\Console.class" should be ".\java\util\Console.class"

Page 157, 159, ..., 203

The header line throughout the inheritance chapter is missing its chapter number.

Page 159

Change "Now staff[1] and staff[2] each get a raise of three percent because they are Employee objects." to " Now staff[1] and staff[2] each get a raise of five percent because they are Employee objects."

Page 159

Change "Example 5-1 is the full sample code that shows you the Manager class at work." to "Example 5-1 shows you how objects of the subclass Manager can be used in place of objects of the superclass Employee ."

Page 161/147/143

Remove "We did that in the sample code of the preceding section".

Page 163

Change "Static binding depends on the method alone; dynamic binding depends on the type of the object variable and the position of the actual object in the inheritance hierarchy." to "Static binding depends on the type of the object variable alone, dynamic binding depends on the type of the actual object at run-time."

Page 163

Change "NOTE: Many Java users follow C++ terminology and refer to virtual functions for functions that are dynamically bound." to "NOTE: Many Java users follow C++ terminology and refer to functions that are dynamically bound as virtual functions."

Page 165

Remove the sentence "Similarly, we needed to make a cast when we used the Math.round method on a double (since round returned a long)."

Page 166

Change "It is good programming practice to find out whether or not your object is an instance of another object before doing a cast." to " It is good programming practice to find out whether or not your object is an instance of another class before doing a cast."

Page 166

Change "The print and raiseSalary methods will work correctly on both types because the dynamic binding that makes polymorphism work locates the correct method automatically." to "The raiseSalary method will work correctly on both types because the dynamic binding that makes polymorphism work locates the correct method automatically."

Page 168

Change "In Java, you use the abstract keyword to indicate that a method cannot yet be specified in class." to "In Java, you use the abstract keyword to indicate that a method cannot yet be specified in this class."

Page 169

Change "iimport java.io.*;" to " import java.io.*; "

Page 177

In the urlDecode method, change

ch = (char)(Format.atoi("0x"
   + in.substring(i, i + 2)));
i++;

ch = (char)(Format.atoi("0x"
   + in.substring(i, i + 2)));
i += 2;

Page 182

Change "Aside from asking an object for the name of its corresponding class object, you can ask for the class object corresponding to a string by using the static forName method." to "You can obtain a Class object in two ways: by asking an object for its corresponding class object, and by requesting the class object corresponding to a string by using the static forName method."

Page 183

Change "Another example of a useful method is one that lets you create an instance of a new class on the fly." to "Another example of a useful method is one that lets you create an instance of a class on the fly."

Page 186

Change "The program prompts you for the name of a class and then writes out the signatures of all public methods and constructors as well as the names of all public data fields of a class." to "The program prompts you for the name of a class and then writes out the signatures of all methods and constructors as well as the names of all data fields of a class."

Page 187

In the printConstructors method, change String name = cl.getName() to String name = c.getName().

Page 189

Change "Uses the methods in the Modifier class to analyze the return value." to "Use the methods in the Modifier class to analyze the return value."

Page 191

Replace

              Field f = fields[i];
                   r += f.getName() + "=";
              Object val = f.get(obj);
              r += val.toString();

with

              Field f = fields[i];
              r += f.getName() + "=";
              Object val = f.get(obj);
              r += val.toString();

Page 193

Change "The point, as we mentioned earlier, is that a Java array remembers the type of its entries, that iss the element type used in the new expression that created it." to "The point, as we mentioned earlier, is that a Java array remembers the type of its entries, that is the element type used in the new expression that created it."

Page 193

"To make this kind of generic array codes we need to be able" should be "To make this kind of generic array copy we need to be able"

Page 193

Change "To actually carry this outs we need to get the length and component type" to "To actually carry this out we need to get the length and component type"

Page 194

Replace

 int[] ia = { 1, 2, 3, 4 };
              ia = (int[])arrayGrow(a);

with

 int[] ia = { 1, 2, 3, 4 };
              ia = (int[])arrayGrow(ia);

Page 194

Replace

              public static void main(String[] args)
              {   ...
                  System.out.println("The following call will generate an exception.");
                  b = (Day[])badArrayGrow(b);
               }

with

              public static void main(String[] args)
              {   ...
                  System.out.println("The following cast will generate an exception.");
                  b = (Day[])badArrayGrow(b);
               }

Page 195

Change "To see method pointers at work, recall that you can inspect or set a field of an object with the get method of the Field class." to "To see method pointers at work, recall that you can inspect a field of an object with the get method of the Field class."

Page 195

Replace

 Object invoke(Object obj, Object args[])

with

 Object invoke(Object obj, Object[] args)

Page 196

Replace

              Object[] args = { new Double(5.5); }
              m2.invoke(harry, args);

with

              Object[] args = { new Double(5.5)};
              m2.invoke(harry, args);

Page 209/159/155

Change "For example, we wrote a Tile..." to "For example, consider a Tile..."

Page 213

"You will read more about threads in Chapter 12" should be "See chapter 2 of volume 2 for more about threads".

Page 214/164/160

Change "So the //now what comment in..." to "So the //now what? comment in..."

Page 218

Replace

                Property carlsSalary = carl.getSalaryProperty();
               double s = carlsSalary.get();

with

                Property carlsSalary = carl.getSalaryProperty();
               String s = carlsSalary.get();

Page 225

"No method except getSeniorityProperty has any knowledge of the getSeniorityProperty class" should be "No method except getSeniorityProperty has any knowledge of the SeniorityProperty class"

Page 233

Change "You will also see the basic methods for using the new printings features of Java 1.1." to "You will also see the basic methods for using the new printing features of Java 1.1."

Page 236 Example 7-1

The first line should be "import corejava.*;". The fourth line should be "public class FirstFrame...". In the fifth line, there should be a space between "String[]" and "args".

Page 240

Change setSize(Dimension d) to void setSize(Dimension d).

Page 241

Code at bottom of page Frame f = new CloseableFrame() should be Frame f = new NotHelloWorld1(),

Page 242

Change "from 75 pixels to the left" to "75 pixels to the right "

Page 252

Change "The reason is that in some encoding schemes such as the Japanese Shift-JIS code, some characters are encoded as single bytes, others as multiple bytes, with "shift" characters switching between character sets" to ""The reason is that in some encoding schemes such as the Japanese JIS code, some characters are encoded as single bytes, others as multiple bytes, with control codes switching between character sets""

Page 254

Indent the first 18 lines of code in the sidebar by one tab stop

Page 254

Change

f.getColor(Color.pink);
f.drawString("Hello", 75, 100);
f.setColor(new Color(0, 128, 128));  // a dull blue-green
f.drawString("World", 75, 125);

g.getColor(Color.pink);
g.drawString("Hello", 75, 100);
g.setColor(new Color(0, 128, 128));  // a dull blue-green
g.drawString("World", 75, 125);

Page 258

Delete "(with one side missing because the drawPolygon function does not close polygons)". (This was apparently a bug in the 1.0 AWT that has been fixed in the 1.1 AWT.)

Page 268

Change "As you saw before, to get a Toolkit object, use the static getDefaultToolkit method of the Toolkit class." to "To get a Toolkit object, use the static getDefaultToolkit method of the Toolkit class."

Page 269 Example 7-11: Image1.java

You can remove the lines

import java.awt.image.*;
import java.net.*;

Page 270/211/207

"draws a scaled image" should be "draws an image".

Page 272

Add public to the update method as follows:

public void update(Graphics g)

Page 275

Change MediaTracker tracker = new MediaTracker(); to MediaTracker tracker = new MediaTracker(this);

Page 281

The closing parenthesis in "by making a call to the getGraphics() method" should be in Courier font

Page 282 Line 8

"pjpb" should be "pjob".

Page 287

Change getDimension to getPageDimension (2x)

Page 291

Change "You can tell the compiler to issue a warning whenever you use one of the older event handling methods..." to "You can tell the compiler to flag all lines that use one of the older event handling methods...

Page 301 last line

Change "having adapter class for these interfaces" to "having adapter classes for these interfaces"

Page 302

Add public to the windowClosing method as follows:

class WindowCloser extends WindowAdapter
{  public void windowClosing(WindowEvent e)
. . .

Page 302

Change resize(300, 200) to setSize(300, 200)

Page 305

Replace

               public class ButtonTest extends CloseableFrame
               {   public ButtonTest ()
                    {   yellowButton = new Button("Yellow")
                         add(yellowButton);
                         .    .    .
                    }
                    .    .    .
                    private yellowButton;
              }

with

               public class ButtonTest extends CloseableFrame
               {   public ButtonTest ()
                    {   yellowButton = new Button("Yellow");
                        add(yellowButton);
                         .    .    .
                    }
                    .    .    .
                    private Button yellowButton;
              }

Page 307

"The flowing simple program extends the code above by letting..." should be "The following simple program extends the code above by letting..."

Page 307

Change "Note the key lines inside the loop inside the constructor" to "Note the key lines inside the constructor"

Page 311 Table 8-1

In ComponentListener, add a row with the method componentShown

Page 311 Table 8-1

for FocusListener, under Parameter, "IsTemporary" should be "i sTemporary"

Page 314

Change void lostFocus(FocusEvent evt) to void focusLost (FocusEvent evt)

Page 315

Change "When the user pushes a key, a keyPressed KeyEvent is generated. When the user releases the key, a keyRelease KeyEvent is triggered." to "When the user pushes a key, a KEY_PRESSED KeyEvent is generated. When the user releases the key, a KEY_RELEASED KeyEvent is triggered."

Page 317

Embarrasingly enough, the book managed to attribute the wrong keystrokes to vi cursor movement commands for three editions, incorrectly creating the impression that the vi keys are arranged in a diamond-like fashion that would aid memorization. Not so--the actual vi keys for cursor movement are h, j, k and l, for left, down, up, and right. We'll fix this in the next edition.

Page 322

Add g.dispose(); below g.drawString("Yikes", x, y); .

Page 325

Change "The MouseEvent interface has five methods" to "The MouseListener interface has five methods"

Page 325..327 MouseTest.java

Remove all three calls to g.translate(getInsets().left, getInsets().top);

Page 326 MouseTest.java

Change nsquares- (actually nsquares followed by a dash) to nsquares--.

Page 331

Change "You can tell that an action originated from a menu by verifying, with the instanceof operator, that the type of the event source is a menu item using the instanceof operator." to "You can tell that an action originated from a menu by verifying, with the instanceof operator, that the type of the event source is a menu item."

Page 335

Change

MenuItem mi1 = new MenuItem("Copy",
	       new MenuShortcut(KeyEvent.VK_C));
MenuItem mi2 = new MenuItem("Copy",
	       new MenuShortcut(KeyEvent.VK_LEFT));

MenuItem mil = new MenuItem("Cut",
	       new MenuShortcut(KeyEvent.VK_LEFT));
	MenuItem mi2 = new MenuItem("Copy",
	       new MenuShortcut(KeyEvent.VK_C));

Page 331

Page 339 MenuTest.java

Remove the two lines

else if (arg.equals("About"))
   popup.show(this, 100, 100);

Page 341, 342 SeparateGUITest.java

Add a call to repaint in the execute method as follows:

public void execute()
{  target.setBackground(color);
   target.repaint();
}

The focus handling has been improved since the book was printed, and now buttons actually retain keyboard focus. Therefore, we must listen to them. In the frame constructor, add the frame as a key listener to each of the three buttons, like this:
```
b = new Button("Yellow");
b.addActionListener(yellowCommand);
b.addKeyListener(this);
add(b);
b = new Button("Blue");
b.addActionListener(blueCommand);
b.addKeyListener(this);
add(b);
b = new Button("Red");
b.addActionListener(redCommand);
b.addKeyListener(this);
add(b);
```
addKeyListener(this); at the bottom of SeparateGUITest() should be removed.

Page 344 MulticastTest.java

Change the main procedure as follows:

public static void main(String[] args)
{  Frame f = new MulticastTest();
   f.show();
}

Page 348

In the code at the bottom of the page, before return p; add a line g.dispose();

Page 349 EventQueueTest.java

This program has ceased to work with recent versions of the JDK. A remedy would be to call the run method from the UI thread, not the main thread. Here is a simple way to make that change. Change the main method as follows:

   public static void main(String[] args)
   {  final EventQueueTest f = new EventQueueTest();
      Button b = new Button("Draw Line");
      f.add(b, "South");
      b.addActionListener(new ActionListener()
         {  public void actionPerformed(ActionEvent evt)
            {  f.run();
            }
         });
      f.show();
   }

Page 354 CustomEventTest.java

Add g.dispose(); as the last line of the timeElapsed method

Page 362/228

There should be a "Panels" heading just after the API notes.

Page 363

Change "The three buttons at the top of the screen..." to "The three buttons at the bottom of the screen".

Page 365

Change public void reset() { minutes = 0; } to public void reset() { minutes = 0; repaint(); }

Page 365

Change "...since it has both a class derived from Frame and a class derived form Canvas" to "...since it has both a class derived from Frame and a class derived from Canvas"

Page 370 TextTest.java

Change Button b = new Button("Pack"); to Button b = new Button("Tick");. In the listener below, remove the two lines hourField.setColumns(10); and validate(); and instead add a line clock.tick();

Page 370 TextTest.java

The method textValueChanged has a reduntant pair of curly braces.

Page 372

Change TextBox to TextField (1x) and IntTextBox to IntTextField (2x)

Page 373

Change "See Example 9-3" to "See Example 9-4" and change "Example 9-4 shows" to "Example 9-3 shows"

Page 378

Remove the sentence "Only the text that is visible in the text area will be printed."

Page 378

"Example 9-5: TextAreaText.java" should be "Example 9-5: TextAreaTe st.java"

Page 379

The second constructor for TextArea should have 4 parameters:

TextArea(String text, int rows, int cols, int scrollBarLook)

After Parameters:. add "text the initial text".

Page 382

"Example 9-6: TextEditText.java" should be "Example 9-6: TextEditTe st.java"

Page 384

The figure is incorrect. The text describes how the first check box has focus, but the figure does not show the dotted rectangle around the label that indicates focus.

Page 390

The line p.setLayout(new FlowLayout()); is not necessary.

Page 410 ScrollPaneTest.java

Remove private Scrollbar horiz; and private Scrollbar vert;

Page 410 ScrollPaneTest.java

Change void main(String args[]) to void main(String[] args)

Page 418

Change "The top area is a panel containing a row of buttons that make the different cards show up in the top area. " to "The top area is a panel containing a row of buttons that make the different cards show up in the bottom area. "

Page 420 CardLayout.java

In actionPerformed, change else layout.show(cards, (String)arg); to else layout.show(cards, arg);. The cast is unnecessary since the variable arg is already a string.

Page 422/267/263

Replace new GridLayout(5,4) with new GridLayout(4,4)

Page 427

Change "In the grid bag layout for Figure 9-19, we set the ... " to "In the grid bag layout for Figure 9-20, we set the ... "

Page 431

panel.add(OK); should be panel.add(ok);

Page 433 CircleLayoutTest.java

Change void main(String args[]) to void main(String[] args)

Page 433/278/274 CircleLayoutTest.java

Change maxComponentHeight = Math.max(maxComponentWidth, d.height) to maxComponentHeight = Math.max(maxComponentHeight, d.height).

Page 434 CircleLayoutTest.java

Change

            c.setBounds(x - d.width / 2, y - d.width / 2,
               d.width, d.height);

            c.setBounds(x - d.width / 2, y - d.height / 2,
               d.width, d.height);

Page 439 PrintComponentTest.java

In the paint method of SavingsCanvas, remove the line double scale = d.height / maxValue; The variable scale is not used anywhere in the program.

Page 441/281/277

Replace "You will need to tell it the name of" with "You will need to supply a reference to".

Page 446

The book has the DataExchangeTest program from the second edition, and the correct program is missing on the CD ROM. The correct version is in DataExchangeTest.java

Page 458

Change "Example 9-22: ImageButton.java" to "Example 9-22: ImageButton Test.java"

Page 471/326/322

In step 3, append "and import the java.applet package"

Page 492

Change "TIF or JPEG" to "GIF or JPEG

Page 503

Change "...but we would need to manually repeat this search process to located the associated resource file" to "...but we would need to manually repeat this search process to locate the associated resource file"

Page 535/387/383

"you should define the hashValue method" should be "you should define the hashCode method"

Page 539

In the sample table output, change CLASSPATH=.;c:\\jdk\\lib to CLASSPATH=c:\\jdk\\lib;c:\\CoreJavaBook;.

Page 560

Change

public int size() { data.size(); }
public Enumeration elements() { data.elements(); }

public int size() { return data.size(); }
public Enumeration elements() { return data.elements(); }

Page 575

In figure 12-1, all arrows must be reversed!

EmployeeSortTest.java (CD only)

{ return 1900 + hireDate.getYear(); should read { return hireDate.getYear();

Volume 2

Page 5

Arrows are missing from ObjectInputStream to InputStream and from ObjectOutputStream to OutputStream

Page 5

Change the classes deriving from DeflaterOutputStream from GZIPInputStream and ZipInputStream to GZIPOut putStream and ZipOutputStream

Page 6

Change the class deriving from OutputStreamWriter from FilterWriter to FileWriter

Page 7

Change "That is, we can only read bytes and byte arrays from the object in" to "That is, we can only read bytes and byte arrays from the object fin".

Page 16

Replace

 OutputStreamWriter out = new OutputStreamReader(new
                       FileOutputStream("output.txt"));

with

  OutputStreamWriter out = new OutputStreamWriter(new
                       FileOutputStream("output.txt"));

Page 21

Change "Also creates a new PrintWriter from an existing OutputStream but allows you determine whether the writer autoflushes or not." to "Also creates a new PrintWriter from an existing OutputStream but allows you to determine whether the writer autoflushes or not."

Page 26

In the code sample, lines 2 and 5 are indented too far

Page 26

In the code sample, change send data to ze to send data to zout

Page 46

API note header "java.io.ObjectInputStream" is missing.

Page 64

Change ".. then there is no problem with reading the object new data." to "... then there is no problem with reading the new object data."

Page 75

Change "Programs that can run more than thread at once are said to be multithreaded." to " Programs that can run more than one thread at once are said to be multithreaded."

Page 90

Change "MAX_PRIORTY" to "MAX_PRIORITY"

Page 112

Change "Transfer $9600 to from Account 1 to Account 2" to "Transfer $9600 from Account 1 to Account 2"

Page 147

Change "The other important method you need is showDocument, which we also discussed in the applet chapter in Volume 1." to "The other important method you need is openStream, which we also discussed in the applet chapter in Volume 1."

Page 200

Change "The JDBC manager will try to find a driver than can use the protocol specified in the database URL by iterating through the available drivers currently registered with the device manager." to "The JDBC manager will try to find a driver that can use the protocol specified in the database URL by iterating through the available drivers currently registered with the device manager.".

Page233

Change "We indicate where make these changes. " to "We indicate where to make these changes.".

Page 247 and 250

Change clear to reset

Page 258

Change "...you will see this technique in Chapter 7." to ""...you will see this technique in Chapter 6."

Page 260

In the last bullet, do not set "Stubs" as Courier.

Page 268

Change "if the target system doesn't support high color" to "if the target system doesn't support the "true" color model"

Page 272

Change "The x, y parameters specify the top left corner for the cropped image, and the width and height parameters specify how large and image to crop." to "The x, y parameters specify the top left corner for the cropped image, and the width and height parameters specify how large an image to crop.".

Page 279

Add bullet point before the "SINGLEFRAME" paragraph.

Page 315

Change "We will not do work that here" to "We will not do that work here".

Page 344

Change "add two "Explicit" beans" to "add two "ExplicitButton " beans".

Page 351

Change "through a propertyChange event" to "through a PropertyChange event"

Page 352

Change filename to fileName (in item 2 and in figure 7-14).

Page 355

Change "..., which allows the the compiler to not have to second_guess the programmer's intentions by analyzing method names." to "..., which allows the compiler to not have to second_guess the programmer's intentions by analyzing method names.".

Page 355

Change public bool isPropertyName() to public boolean isPropertyName()

Page 360

Change "If a boolean property is changed, then an Integer is returned" to "If a boolean property is changed, then a Boolean is returned"

Page 387

Change "int p = ((Integer)getValue()).intValue();" to "int i = ((Integer)getValue()).intValue();"

Page 387

Change "wrapper object" to "wrapper object" (2x). (I.e. don't set as Courier)

Page 399 API note for getJavaInitializationString

Change "...that can be used to enerate code..." to "...that can be used to generate code..."

Page 437 ClassLoaderTest.java

In the loadClassBytes method of the CryptoClassLoader class, make the following two changes: Change

String cname = name.replace('.', '/') + ".class"

String cname = name.replace('.', '/') + ".caesar"

and change

buffer.write(ch);

buffer.write(ch - key);

Page 445

The code listing for Example 8-3 shows the code for CipherTest.java and not the one for VerifierTest.java,which it should show.

Page 451, 454 SecurityManagerTest.java

Change getClassContext()[0] == getClassContext()[i] to cc[0] == cc[i].

Page 454 SecurityManagerTest.java

Change String[] badWords = { "sex", "drugs", "C++" }; to String[] badWords = { "sex", "drugs", "c++" };. (Note: The checkRead method turns the input word into lowercase before looking it up.)

Page 466

Change "What Tom does is use his private key..." to "What Joe does is use his private key..."

Page 484

(last line) Change "cay@horstmann.com.x509" to "cay.x509 "

Page 494

The FileReadApplet.java's source is missing from the CD.

Page 516

Change Local germanSwitzerland to Locale germanSwitzerland

Page 559

In ProgramResources_de, change getObject to handleG etObject and add { . . . } around the if/else/else statement.

Page 560

In ProgramResources_en_US, change getObject to handleGetObject and add { . . . } around the if/else/else statement.

Second Edition Bugs

Bugs in both editions are denoted by page numbers p2/p1, where p2 is the page number in the second edition and p1 the page number in the first edition.

Page 6

Change http://www.cs.princeton.edu/~felton to http://www.cs.princeton.edu/ sip. The link http://ferret.lmh.ox.ac.uk/~david/java/bugs/ is no longer available.

Page 7

Change http://java.sun.com:80/java.sun.com/sfaq/index.html to http://java.sun.com/sfaq/index.html

Page 9

First paragraph: "third-part" should be "third-party"

25

'Go to \WIN95NT\WINEDITA' should be 'Go to \WIN95NT\WINEDIT\WINEDITA'.

Page 25

There is no separate doc directory. The documentation for RMI and JDBC has been integrated into the class tree. There is no api directory either. JavaSoft didn't want us to distribute it. The same information is available, in more convenient from, in the class tree extracted with javadoc.

Page 29/29

Change java welcomeapplet.java to javac welcomeapplet.java .

Page 52

Eliminate: "In fact, comments do not nest in Java." This should be a note at the end of the "Comments" section, as it was in the first edition.

Page 74/72

The "A" in "A while loop tests at the top" should not be in the Courier font.

Page 106/104

Date.parse returns a long, not a void (the number of milliseconds since 1/1/70 00:00 GMT).

Page 112/109

Change "we check the month (d.month())" to "we check the month (d.getMonth())"

Page 118

A constructor is always called with the new keyword." newshould be in Courier font.

Page 171/167

Change "Probably the most commonly used method of getClass" to "Probably the most commonly used method of the class Class "

Page 193

Replace int cy = client_height / 2 with int cy = client_height / 2 + in.top and replace g.drawRect(0, 0, client_width - 1, client_height - 1) with g.drawRect(in.left, in.top, client_width - 1, client_height - 1)

Page 223

Change the call to setTitle to setTitle("ButtonTest"); (without spaces or :)

Page 229/225

Change setTitle("Panel test") to setTitle("PanelTest")

Page 234

TextTest.java is missing code: setTitle("TextTest");.

Page 258

In figure 7-11, remove the arrows TextComponent -> ScrollBar -> List to Label -> Choice -> Checkbox -> Canvas -> Button. (This bug won't die--it was fixed in the second printing of the first edition, but it reemerged in the second edition.)

Page 280/277

Replace "before beginning to the read operation." with "before beginning the read operation.".

Page 283/279

Replace both occurrences of "else . . ." with "else if . . ."

Page 287/283

change "in the processResults method" to "in the processResult method"

Page 293/289

Replace "(between 0 and 32)" with "(between 0 and 31)".

Page 303/299

Both the method mouseMove() and mouseDrag() are missing a return true statement.

Page 303/299

In mouseDrag, replace draw(current) with draw(g, current) (2x)

Page 313/309

The code right below the first and second paragraph, replace vert.setValue(horiz.getValue(), d.height, 0, 400); with vert.setValues(vert.getValue(), d.height, 0, 400);

Page 321/317

public void paint(graphics g)
Font f = new Font("System", Font.BOLD, 18);
{  ...

should be

public void paint(graphics g)
{  Font f = new Font("System", Font.BOLD, 18);
   ...

Page 327/323

The CalculatorApplet.java program doesn't include the import corejava.*, awt.*, and applet.* statements

Page 328/324

For the calculator applet, since the calculator doesn't have a % button, the line in the calculate method

else if (op == "%") ...

is not needed.

Page 357/353

In Example 8-5: CrawlerApplet.java, in the method "search", the line "AppletContext context = getAppletContext();" should be removed

Page 376/372

Replace Item i = (Item)itemsOrdered.removeElementAt(n);with itemsOrdered.removeElementAt(n); (The method has no return value.)

Page 381/377

Change String s = "149-16-2536" to String s = "987-98-9996"

Page 381

The line e = staff.get(s); // gets harry should read e = (Employee)staff.get(s); // gets harry.

Page 410/404

Change "The first four options are not appropriate" to "The first three options are not appropriate"

Page 410/404

Change "But if the List class is part of the default package" to "But if the LinkedList class is part of the default package"

Page 414/408

The computation of the future values had the year and the interest rate swapped. Replace balance[i][j] = futureValue(10000, 10 + 10 * i, 5 + 0.5 * j); with balance[i][j] = futureValue(10000, 5 + 0.5 * j, 10 + 10 * i);. The correct values of the table are then:

5.00%     5.50%     6.00%     6.50%     7.00%     7.50%
 10  16470.09  17310.76  18193.97  19121.84  20096.61  21120.65
 20  27126.40  29966.26  33102.04  36564.47  40387.39  44608.17
 30  44677.44  51873.88  60225.75  69917.98  81164.97  94215.34
 40  73584.17  89797.65 109574.54 133696.02 163114.11 198988.89
 50 121193.83 155446.59 199359.55 255651.37 327804.14 420277.39

Jay Freedman, the discoverer of this bug, writes: "Interestingly, the results of the erroneous version are similar to (at least, the same order of magnitude as) those from the correct version. Beware of output that 'looks' correct!"

Page 458

Change "or 1 to skip a number of bytes" to "or one to skip a number of bytes"

Page 535/531

The program should use notifyAll instead of notify.

Page 546/542

Change g.drawImage(image, -i * imageHeight, imageCount, null) with g.drawImage(image, 0, -i * imageHeight / imageCount, null)

Page 546/542-543

In the class definition(s) of Animation, replace extends Runnable with implements Runnable

Page 556/552

Sun has turned off port 13 on java.sun.com; try time-A.timefreq.bldrdoc.gov instead.

Page 565

Remove "public" from the front of "class ThreadedEchoHandler"

Page 566/562

Replace "client'(space)s" with "client's" and replace "Let'(line break)s" with "Let's

Page 575/571

Change os.writeBytes to out.writeBytes (2x)

Page 592

Change San Jose to San+Jose

Page 613

There should be a comma after NUMERIC(m, n). The or should not be set in Courier (2 x).

Page 635

The line

   ResultSet rs = md.getTables("", null, "%", types)

should be changed to

   ResultSet rs = md.getTables(null, "%", "%", types)

to be consistent with the sample program. Actually, these parameters depend somewhat on your SQL server.

Page 656

Change the URL from "" to "rmi://" with the 1.1 Beta version of RMI.

Page 688

The files HelloNative.h and HelloNative.c are switched.

First Edition Bugs

Page 24*

Replace SET CLASSPATH=C:\java\lib;C:\CoreJavaBook with SET CLASSPATH=C:\java\lib;.;C:\CoreJavaBook

Page 25

At the end of second paragraph, add "Use the File | OpenFile command and select the file tree.html in the \java\api directory."

Page 36*

Replace Void Main with void main to match the figures

Page 39

Remove import java.net.*;

Page 39

Replace method "action" with

   public boolean action(Event evt, Object arg)
   {  if (arg.equals("Open"))
      {  FileDialog d = new FileDialog(this,
            "Open image file", FileDialog.LOAD);
         d.setFile("*.gif");
         d.setDirectory(lastDir);
         d.show();
         String f = d.getFile();
         lastDir = d.getDirectory();
         if (f != null)
            image = Toolkit.getDefaultToolkit().getImage(lastDir + f);
         repaint();
      }
      else if(arg.equals("Exit")) System.exit(0);
      else return false;
      return true;
   }

where lastDir is a private variable of ImageViewer.

Page 48

Replace \CoreJavaBook\ch2\FirstSample directory. with \CoreJavaBook\ch3\FirstSample directory.

Page 49

Replace "Thus you must have a main method (function) for your code to compile." with "Thus you must have a main method (function) for your code to execute."

Page 53

Replace "(7 significant decimal digits)" with "(6-7 significant decimal digits)"

Page 59*

Replace 3 !==7 with 3 != 7

Page 60*

Replace int thirdBit = (foo&8)/8: with int thirdBit = (foo&8)/8;

Page 60

Replace "gives you a one if the third bit in the binary representation of foo is on," with "gives you a one if the fourth bit from the right in the binary representation of foo is on,"

Page 62*

Replace Expletive: with Expletive;

Page 62

Replace string greeting = "Hello"; with String greeting = "Hello";

Page 62

Replace string s = greeting.substring(0, 4) with String s = greeting.substring(0, 4);

Page 63

Replace int n = greeting.length() // is 5. with int n = greeting.length(); // is 5.

Page 66*

Before "Once you have done this...", add
Be sure to add the line

     import corejava.*;

to every program that utilizes the Console class.

Page 66*

Add the line import corejava.*; before the line class ...

Page 67*

Add the line import corejava.*; before the line class ...

Page 67*

Replace "Your payment is" with "Your payment is "

Page 70

The code should read

      if (yourSales >= 2*target)
      {   performance = "Excellent";
          bonus = 1000;
      }
      else if (yourSales >= 1.5*target)
      {   performance = "Fine";
          bonus = 500;
      }
      else if (yourSales >= target)
      {   performance = "Satisfactory";
          bonus = 100;
      }
      else
      {   System.out.println("You're fired");
      }

Page 71

Remove C++ note. At the bottom of page 60, add

Selection Operator

The expression

   condition ? e1 : e2

evaluates to e1 if the condition is true, to e2 otherwise. For example,

   x < y ? x : y

computes the smaller of x and y.

Page 71*

Add the line import corejava.*; before the line class ...

Page 73*

Add the line import corejava.*; before the line class ...

Page 75*

Add the line import corejava.*; before the line class ...

Page 76

missing ; after Console.readInt()

Page 80

The Format class on the CD ROM has a bug--formatting 9.999 with "%.2f" shows up as 9.00. This is fixed in Format.java

Page 80*

At the end of the sidebar, add
You must add the line

     import corejava.*;

to every program that uses the Format class.

Page 82*

Add the line import corejava.*; before the line class ...

Page 88*

Add the line import corejava.*; before the line class ...

Page 100

Replace (Benjamin Cumming, 1994). with (Benjamin Cummings, 1994).

Page 101

At the end of 13th line(Now you can start applying AudioClip methods to meow), add "(Actually, it is a little harder in Java to obtain a real audio clip. Here we just use audio clips to introduce the typical object notation.)"

Page 103

Replace Date preMillenium = new Date(1999,12,31); with Date preMillennium = new Date(99,11,31);

Page 103

Replace Date preMillenium = new Date(1999,12,31,23,59,59); with Date preMillennium = new Date(99,11,31,23,59,59);

Page 105

Add the line import java.util.*; before the line class ...

Page 106

There is a bug on the CD ROM in the default constructor of the Day class. Here is the correct Day.java .

Page 108*

Replace Date with Day

Page 109*

Replace "make a Date object" with "make a Day object"

Page 111

Replace { return name with { return name;

Page 113*

Replace "there are actually five access levels" with "There are actually four access levels". (Note: The private protected attribute is being withdrawn.)

Page 113

The instance fields in "Next, notice that there are three instance fields" should be set in italics.

Page 115

Replace { return name with { return name;

Page 116

Replace "By the way, the function is called getName() because it can't be called name()-" with "We could actually call the method name(), although it would be confusing to have a variable and a method that are called the same."

Page 119

Replace javac Mortgage with java Mortgage

Page 120

Remove package corejava;

Page 121

Replace Date today = new Date() with Day today = new Day()

Page 121

Replace Date preMillenium = new Date(1999,12,31) with Day preMillenium = new Day(1999,12,31)

Page 125

At the bottom of this page, replace int cards; with private int cards;

Page 126

Replace the code final public void fill() with the code at the bottom of this page

Page 143

In the third paragraph, replace "However, staff[0] "forgets" that it refers to a Manager and just considers itself as Employee object." with "However, staff[0] is only considered to be an Employee object by the compiler."

Page 148*

Replace "Java uses the inheritance syntax" with "Java uses the cast syntax"

Page 148

Replace Manager* boss = dynamic_cast<Manager>(staff[1]); with Manager* boss = dynamic_cast<Manager*>(staff[1]);

Page 159

Replace public string powerSource(PoweredVehicle); with public String powerSource(PoweredVehicle);

Page 162

After the first paragraph, add "Tip: Instead of writing x.toString() , you can write "" + x. That expression concatenates the empty string "" with the string representation of x, that is, x.toString(). This trick is a common idiom that you find in many java programs."

Page 172*

Remove the two sentences "To placate the C++ crowd... the same package".

Page 172*

Add a "C++ Note" icon to the paragraph that starts with "As it happens, protected..."

Page 172*

Remove "3. visible to the class and all subclasses" and renumber the remaining lines

Page 177

The second line in the second paragraph, replace "Alternative Window Toolkit or AWT. Even though it is called the "alternative" toolkit, you don't have ..." with "Abstract Window Toolkit or AWT. At one point, it was called the "alternative" window toolkit, but you don't have ... "

Page 182

Replace "How you handle an event is controlled by the handleEvent method in the Event class." with "How you handle an event is controlled by the handleEvent method in the Component class."

Page 183

Replace "you need to override the paint method from the Frame class" with "you need to override the paint method from the Component class"

Page 184

In the second paragraph, replace "Not a Hello, World" with "Not a Hello, World program"

Page 184

On the first line, replace "they are" with "it is"

Page 186

Replace Font(String name, Font property, int size) with Font(String name, int property, int size)

Page 187

Replace cy += fim.stringWidth(s2); with cx += fim.stringWidth(s2);

Page 195

Replace int angle = 30;; with int angle = 30;

Page 195

Replace // opening angle of mouth with // half the opening angle of mouth

Page 197

Replace void draw3dRect(...) with void draw3DRect(...)

Page 200

Add the following to the bottom of this page: "For the alternating rule, a point is inside if an infinite ray with the point as origin crosses the path an odd number of times."

Page 201

Replace int angle = 30;; // opening angle of mouth with int angle = 30; // half the opening angle of mouth

Page 204*

Replace Toolkit.getDefaultToolkit.getImage(name) with Toolkit.getDefaultToolkit ().getImage(name)

Page 206

Replace "The tiling occurs in the paint program." with "The tiling occurs in the paint method."

Page 209

In the method paint, replace buffered_image with // buffered_image

Page 209

On the top of the page, repalce for(int j = 0; j <= client_width / image_width; j++) with for(int j = 0; j <= client_height / image_height; j++)

Page 209

Replace "updates the component without erasing the current image." with "updates the component unless overridden, it erases the screen area and calls the paint method."

Page 210

Align text following dx and dy parameters

Page 212*

Replace "Since Frame (indirectly) extends" with "Since Frame indirectly implements"

Page 214

replace java.awt.ImageObserver with java.awt.image.ImageObserver

Page 218

Figure 7-1 has wrong button labels. Figure 7-2 on page 221 has wrong button labels too

Page 219

Replace yellowButton.setBackground(color.yellow); with yellowButton.setBackground(Color.yellow);

Page 221

Replace note on this page with "The add method belongs to the panel, not the layout manager. But the layout manager needs to know about the added items, and, more importantly, the layout directives (such as "North"). It needs that information so it can do the layout. Thus, whenever you add an item to a container, the container passes on the item and any layout directives to the layout manager."

Page 223

In the method "action", replace else return false; with else return super.action(evt, arg);

Page 227

In the method "action", replace else return false; with else return super.action(evt, arg);

Page 231

Replace int hours = Integer.parselnt(hourField.getText().trim()) with int hours = Integer.parseInt(hourField.getText().trim())

Page 231

In the method "action", replace else return false; with else return super.action(evt, arg);

Page 235

Replace the method "getValue()" with

   public int getValue()
   {  int value;
      try
      {  value = Integer.valueOf(getText().trim()).intValue();
      }
      catch(NumberFormatException e)
      {  value = 0;
      }
      return value;
   }

Page 243

Replace Panel p; with

   Panel p = new Panel();
   p.setLayout(new FlowLayout());

Page 250

In the second paragraph, replace "parameters that take the number of items ..." with "a parameter that takes the number of items ..."

Page 254*

Remove the arrows TextComponent -> ScrollBar -> List to Label -> Choice -> Checkbox -> Canvas -> Button

Page 254

Replace panel.addLayout(new CardLayout()); with panel.setLayout(new CardLayout());

Page 260

Replace 'and "Dialog".' with 'and "Preferences".'

Page 260

Replace

   {  if(arg.equals("<"))
         layout.next(cards));
      else if ...
   }

with

   {  if(arg.equals("<"))
         layout.previous(cards));
      else if ...
   }

Page 262

In the class SimpleDialog, remove

   Panel p = new Panel();
   p.add(new Button("OK"));
   add("south", p);

Page 264

Add line import corejava.*; after the first line

page 265

Replace

   if (op == "+") arg += n;
   else if (op == "-") arg -= n;
   else if (op == "*") arg *= n;
   else if (op == "/") arg /= n;
   else if (op == "%") arg %= n;
   else if (op == "=") arg = n;

with

   if (op.equals("+")) arg += n;
   else if (op.equals("-")) arg -= n;
   else if (op.equals("*")) arg *= n;
   else if (op.equals("/")) arg /= n;
   else if (op.equals("%")) arg %= n;
   else if (op.equals("=")) arg = n;

Page 266

The text beneath figure 7-17, replace "the list box spans three columns," with "the list box spans three rows,"

Page 266

The text beneath figure 7-17, replace "and the text field at the bottom spans three fields." with "and the text field at the bottom spans three columns."

Page 267

The second line from the end, replace "then the area never grows beyond its initial size in that direction." with "then the area never grows or shrinks beyond its initial size in that direction."

Page 269*

The program has a glitch in the constructor. It also doesn't actually show the font in the sample line. The file FontDialog.java fixes these blemishes.

Page 270

At the bottom of this page, replace int weightx, weighty with double weightx, weighty

Page 270

Replace add(sample, gbl, gbc, 0, 3, 4, 1); with add(sample, gbl, gbc, 0, 3, 3, 1);

Page 271

Add panel.add(ok); in front of the last line

Page 275

Remove if(n == 0) return;

Page 278

Replace if(arg.equals("OK")) dispose(); with if(arg.equals("Ok")) dispose();

Page 280

In method "handleEvent", replace System.exit(0); with dispose();

Page 282

Replace if(arg.equals("OK") with if(arg.equals("Ok")

Page 282

The first line, replace ConnectInfo defaults = new UserInfo(defaultName, ""); with ConnectInfo defaults = new ConnectInfo(defaultName, "");

Page 287

The top part of this page should read

   FileDialog d = new FileDialog(parent, "Save note file", FileDialog.SAVE);

The third argument is either LOAD or SAVE. Set the directory.

   d.setDirectory(".");

If you have a default file name that you expect the user to choose, supply it here.

   d.setFile(filename);

2. Then show the dialog box.

   d.show();

Page 287

Replace if (d != 0) ... with if (filename != null) ...

Page 287

Add this line "This feature does not currently work." after the line "sets the initial file mask for the file dialog."

Page 290

In the note, replace method with // method

Page 297

The Parameters for KeyUp, replace "key the key that is pressed" with "key the key that is released"

Page 304

At the bottom of this page, replace public boolean handleEvent(Event e) with public boolean handleEvent(Event evt)

Page 305

In the TIP, change private yellowButton; to private Button yellowButton;

Page 306

The method setPageIncrement(int l) should return void. Also at the end of next paragraph, add "This method does not currently work correctly on all platforms."

Page 309

In the first paragraph, replace WINDOW_MOVE with WINDOW_MOVED

Page 309

The code right below the first paragraph, replace Event.MOVE_EVENT with Event.WINDOW_MOVED

Page 319

In the first paragraph, at the end of "You need to quit and restart Netscape to reload the new version of the applet.", add "You can avoid this problem by setting both the disk and memory cache size to 0, but then performance suffers." (Note by Cay: I think this is an urban legend--setting the cache size to 0 doesn't seem to work.)

Page 324

Replace

   if (op == "+") arg += n;
   else if (op == "-") arg -= n;
   else if (op == "*") arg *= n;
   else if (op == "/") arg /= n;
   else if (op == "%") arg %= n;
   else if (op == "=") arg = n;

with

   if (op.equals("+")) arg += n;
   else if (op.equals("-")) arg -= n;
   else if (op.equals("*")) arg *= n;
   else if (op.equals("/")) arg /= n;
   else if (op.equals("%")) arg %= n;
   else if (op.equals("=")) arg = n;

Page 328

The font used for the heading of the section on the NAME tag should be a plain, upper-case italic, NOT a bold, mixed-case italic.

Page 334

Replace the second import java.awt.*;(on top and bottom part of this page) with import java.applet.*;

Page 334

Replace &ltAPPLET CODE="FontTestApplet.class WIDTH = 200 HEIGHT = 200> with &ltAPPLET CODE="FontTestApplet.class" WIDTH = 200 HEIGHT = 200>

Page 336

Move the instance variables at the front of the class "Chart" to the end of the class. Also replace

   double values[];
   String names[];
   String title;

with

   private double[] values;
   private String[] names;
   private String title;

Page 339

Replace class CalculatorApplet extends Applet with class PopupCalculatorApplet extends Applet

Page 344

Replace System.out.println(e.getClass().getName()); with System.out.println(a.getClass().getName());

Page 345

The second line from the end, replace "and you many not have seen the relevant tags." with "and you may not have seen the relevant tags."

Page 351

Replace "As we said, we do not want to get into the details about threads." with "As we said, we do not want to get into the details about threads and the Runnable interface. See chapter 12 for more information."

Page 351

Replace class CrawlerApplet extends Applet with class CrawlerApplet extends Applet implements Runnable

Page 351

Replace method "start" with

   public void start()
   {  if(runner != null && runner.isAlive())
         runner.resume();
      else if(runner.isAlive())
         runner.resume();
   }

Page 353

In the method destroy(), replace runner.resume(); with runner.stop();

Page 357

In the middle of this page, replace "In this example, we just reuse the retirement calculator." with "In this example, we just reuse the calculator."

Page 366

In method action, remove the first "else if" clause.

Page 370

In the third paragraph, replace "This gives the user completely safe set, append, and get array access methods." with "This gives the user completely safe set, append, and get vector access methods."

Page 377

Replace e = (Employee)employee.get(s); with e = staff.get(s);

Page 383

Replace class PartNumber() with class PartNumber

page 383

Replace return 13 * description.hashValue() + 17 * version; with return 13 * description.hashCode() + 17 * version;

Page 384

In the first paragraph, replace "then a test like the one below..." with "then a lookup like the one below..."

Page 386

Replace two API descriptions elements() with Enumeration elements()

Page 393

In the method HashSetTest(), "for" loop body name.addItem(f[i]); needs to be indented

Page 396

Replace s1.reset(); with a.reset();

Page 396

Replace Employee e = (Employee)s1.currentElement(); with Employee e = (Employee)a.currentElement();

Page 397

Remove the semicolon at the last line

Page 403

Comment in code saying "do something with ob;" should say "do something with o;"

Page 403

Replace return current != 0; with return current != NULL;

Page 404

The call data.reset() in "remove()" of Queue is unnecessary

Page 404

The private protected mechanism is no longer used in Java

Page 413

In the PascalCanvas constructor, the "if..else if..else.." block in inner for loop need to be indented

Page 423

In C++ note, replace "The throws statement is the same as ..." with "The throws specifier is the same as ..."

Page 435

The last comment in the example code should be "// stack was empty"

Page 437*

Indent the paragraph starting with "For example, look at our Format.java file..."

Page 438

Replace "Here is the code for the MessageCracker class" with "Here is the code for the MessageCrackerTest class"

page 439

At the bottom of this page, in the end of "Netscape has a nice 'Java Console' (available in the Options menu) that displays all the strings sent to System.out.", add "(see figure 10-4)"

Page 441

Replace "Here is the code for the DebugWin class." with "Here is the code for the DebugWinTest class."

Page 443*

The program listing is wrong. Please substitute the file \CoreJavaBook\ch10\BuggyButtonTest\ButtonTest.java. Great--a bug in the debugging chapter...

Page 443

In the method "action", replace else return false; with else return super.action(evt, arg);

Page 445

In the "where" command description, replace "|" with "or"

Page 448

In the last paragraph, replace "Setting breakpoints in an action statement works pretty well." with "Setting breakpoints in an action method works pretty well."

Page 456

In the second paragraph, replace "FileInputStream and FileOutputStream give you an input stream ..." with "FileInputStream and FileOutputStream give you input and output streams ..."

Page 458

At the very bottom of this page, replace "Java has no method to support that." with "Use writeChars for that purpose."

Page 463

Below the line java.io.PushbackInputStream, add line

. PushbackInputStream(InputStream in)

Page 463

Replace "constructs a stream a with one-character lookahead." with "constructs a stream with a one-character look-ahead.".

Page 464

Replace BufferedOutputStream(OutputStream in) with BufferedOutputStream(OutputStream out)

Page 464

Replace BufferedInputStream(InputStream in, int n) with BufferedOutputStream(OutputStream out, int n)

Page 466

In the API note for String nextToken(), replace "Throws a NoSuchElementException if the are no more tokens." with "Throws aNoSuchElementException if there are no more tokens."

Page 466

Replace "These three delimiters are used ..." with "These four delimiters are used ..."

Page 468

Replace void readData(Employee[] e, DataInput in) with Employee[] readData(DataInputStream in)

Page 468

In the third paragraph, remove "This also discards the prior contents of e."

page 468

In the method "readData", replace e[i] = new Employee("", 0, null); with e[i] = new Employee();

Page 469

In the first "try" block, add os.close(); at the end, in the second "try" block, add is.close(); at the end

Page 469

In the class "Employee", before the method print(), add public Employee() {}

page 471

Replace the code static String readFixedString(int size, DataInput in) at the bottom of the page with the code on page 474-475

Page 472

In the method "readData", replace DataIO.readFixedString(name, NAME_SIZE, in); with name = DataIO.readFixedString(NAME_SIZE, in);

Page 478

Replace the method "readData" with the one on page 479

Page 478

Replace "take care of their data fields." with "take care of its data fields."

Page 484

The code segment at the top, replace the comment // save parent class with // read(restore) parent class

Page 488

At the bottom of the page, replace salary = readDouble(",salary="); with salary = ps.readDouble(",salary=");

Page 493

In the method writeString, replace print((char)ch); with print(ch);

Page 493

In the method writeString, remove StringBuffer b = new StringBuffer(s.length() + x.length() + 2);

Page 503

The headers for chapter 12, "Multithreading", are all numbered as chapter 10. They should be 12

Page 504

On the CD-ROM, the method bounce() (in ch12\Bounce directory) sleeps for 5 milliseconds, not 10

Page 506

Remove "Before we can get the ball to bounce correctly, we need to make one more change inside the ball's run method. The original bounce code kept checking the system time, and only moved the ball after 5 milliseconds had elapsed."

Page 511

Replace "Figure 10-4 shows the states that ..." with "Figure 12-5 shows the states that ..."

Page 522

Replace class ImageLoader extends Thread with class ImageLoader extends ThreadGroup

Page 527

In the method run(), replace if(to >= from) to++; with if(to == from) to = (to + 1) % Bank.NACCOUNTS;

Page 537

In class "TimerTest", cross out the line Canvas canvas;

Page 540

The code segment in the middle, replace "|" with "}"

Page 543

In the method stop(), replace runner.isActive() with runner.isAlive()

Page 559

Replace s.start(); with t.start();

Page 561

In the class "ThreadedEchoHandler", remove Socket incoming; and int counter; In the end of the class, add

   private Socket incoming;
   private int counter;

Page 561

In the class "ThreadedEchoHandler", add public in front of ThreadedEchoHandler(Socket i, int c)

Page 561

Add "public" in front of "class ThreadedEchoServer" and move this class to the beginning of the code

Page 565

In the method init(), add line setLayout(new BorderLayout()); at the beginning

Page 565

In the method init(), replace add("South", p); with add("North", p);

Page 565

In the method action, remove the first "else if" clause

Page 566

In the method paint, replace int x = 0; with int x = 80;

Page 567

In the last paragraph, replace "When the user clicks the Send button," with "When the user clicks the Mail button,"

Page 568

Replace "it wil not use port 8189." with "it will not use port 8189."

page 575

In method action, remove the first "else if" clause

Page 577

Cross out the line private int m = 1;

Page 580

The second line from the end, replace "Then the applet shows a list of cities in the list box on the left." with "Then the applet shows a list of cities in the list box on the right."

Page 582

Replace String query = "/Weather_Text/U.S._City_Forecasts" + state; with String query = "/Weather_Text/U.S._City_Forecasts" + "/" + state;

Page 582

Replace int i = line.indexOf('0', 1); with int i = line.indexOf("0/", 1);

Page 583

Replace String query = "/Weather_Text/U.S._City_Forecasts" + state; with String query = "/Weather_Text/U.S._City_Forecasts" + "/" + state;

Page 585

In the last line, replace "between the corporate network to the Internet," with "between the corporate network and the Internet,"

Page 586

In the first paragraph, it's William R. Cheswick, not William K. Cheswick

Page 588

In class ProxySvr, remove int j = 0; and j++;

Page 588

In class ProxySvr, add "public" in front of the "class ProxySvr"

Page 589

In main method, replace if(pos < 0) throw e; with if(pos2 < 0) throw e;

Page 592

In fifth paragraph, replace "Neither C nor Java" with "Neither C nor Perl"

Page 597*

The Perl script has two errors. The code $service_name == "http" should read $service_name eq "http", and likewise $service_name == "gopher" should be $service_name eq "gopher". Of course, a really well-designed language would not lead programmers astray with spurious definitions of == for strings... (see page 65)

Page 613

The Calculator class is on page 264, not 339

Page 696

In the Employee_raiseSalary function, replace ClassEmployee with ClassEmployee*.

*: fixed in second printing.

We would like to thank Kamal Abdali, Richard Adler, Mattas Almgre, Ram Bala, Fred Ballard, Alexander R. Barwick, Greg Bell, Bob Bennett, Jeff Bensman, Michael Berman, Clemens Bertram, Michael Best, Steve Betz, Eric L. Blair, Dan Buffum, Mike Carr, Mark Castillo, Mark Chamness, Chris Chang, James Chen, Steven Chow, William Christ, Keh-Cheng Chu, Bob Clarke, Dave Claussen, Gary Clayburg, Michael William Clayton, Steve Cooke, Marcus Crafter, William Crawford, Anand Daga, Neil Daswani, Rob Day, Chris Dennis, John Deacon, Dilip Deodhar, Robert Doesburg, Richard Domer. Scott Dunbar, John Dutton, Carlos Escalante, Bruce Eckel, John Engelman, Thomas Engelin, Hilmi Erdem, Bruce Evans, Walt Farrell, Alan C Francis, James Francis, Neil Francis, Jay Freedman, Sid Frost, Michael Fuerst, Dave Fuller, Jack Gage, Art Gittleman, David Glaude, Paul Glezen, Michael Godfrey, Thomas Goettsche, Roy Goldman, Aryeh Goldsmith, Adolfo Grego, Chuck Han, William Harris, Alan Hartman, Jeff Heuer, David Hills, Erik Hjelmes, Chuck Horowitz, Dave Hsu, Edwin Huizinga, Waikwan Hui, Jason Hulance, David C. Hume, Francis Hwang, Kel Hunt, Mahesh Inturi, Shinichi Iwamoto, Per Kromann Jacobsen, Miguel C. Jardine, Sjaak Janssen, Dan Jensen, Thomas Johannesson, Bob Johnsen, Russell Johnston, Yue Kang, David M. Karr, Mark Kinzie, Thomas Kirsch, Henrik Kjell, Greg Knight, John Kottal, Eluri Vijaya Kumar, P.J. LaBrocca, Wilmer Lau, Jim Lawton, Hai N. Le, Tuyen M. Le, April Lee, Joon Suk Lee, Stephen Lee, Suk Y. Lee, Jocelyn Legault, Eric Lu, Gregory S. Lyons, Chinh Mai, Chris Maloof, Thomas G. Marshall, Alexandre Martin, Douglas Martin, Kim McCall, Anthony McCarthy, Donald E. McCollam, Helmut Messerer, Glen Meints, Ari Meyer, Sandeep Mitra, Alan Murray, Mat Myszewski, Balasubramanian Narasimhan, David Naylor, Eiji Nishihara, Ralf Nolting, Jeff O'Brien, John Olsson, John Pagliarulo, Fred Pantalone Jr., Jim Patrick, Tony Peterman, Gary L Peskin, Doantam Phan, Vanh Phom, L. Dale Pickering, Craig Prescott, Jim Preston, David Prokop, Joe Rantala, Larry Reeves, Gene Reznik, Brian Rogoff, Behr de Ruiter, Ursula Rost, Rob Rucker, Fred Ruddock, Daniel Rybowski, Art Salwin, Steve Sanders, Matt Sartori, Mike Sauer, Max Schaible, Stefan Schmitz, Craig Schreder, Warren Seltzer, Scott Shifflett, Pankaj Singhal, Bryan Smith, Jolanta Snowel, George K. Staropoli, David Starr, Jon Steelman, H. David Stein, Paul Stoecker, Andrew Swartzbaugh, Leonardo Susatyo, Jonas Svensson, Kenya Tanaka, Jeff Taylor, Peter Teitelbaum, Janet Traub, Thomas J. Trop, Brendan Tompkins, Sashank Varma, Nicolas Vekemans, Tis Veugen, Steve Viens, Ulrich Vollert, Henry Wassermann, Chai Khee Wee, Don Weiss, Larry Weiss, John N. Welch, Harold Westlund, Richard Williams, Lau Wilmer, Alice Wong, Rebecca Xue, Hsueh-ching Yen, Seongjun Yun, Rehan Zaidi, Lenny Zeltser, Song Zhang, Zhihong Zou, Werner Zsolt, John Zukowski, and a number of anonymous contributors for their bug reports!

Last Modified: 1999-10-25

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