1. Some programmers like to use the this variable with instance variables and method calls on the implicit parameter object. Rearrange the code of the BankAccount class below that makes use of the this variable. (The withdraw and getBalance methods are omitted.)

    Not all lines are useful.

    ^public class BankAccount
+{
+ private double balance;
+ public BankAccount()
+ {
.  this.balance = 0;
^ }
+ public BankAccount(double balance)
+ {
.  this.balance = balance;
-  balance = this.balance;
^ }
+ public void deposit(double amount)
+ {
.  this.balance = this.balance + amount;
^ }
+ public void transfer(double amount, BankAccount to)
+ {
.  this.withdraw(amount);
,  to.deposit(amount);
-  this.to.deposit(amount);
-  to.deposit(this.amount);
^ }
+ // ...
+}