code review

Can some have this done immediately

public class BankAccount

{

   private double balance;

   public BankAccount()

   {

      balance = 0;

   }

   public BankAccount(double initialBalance)

   {

      balance = initialBalance;

   }

   public void deposit(double amount)

   {

      balance = balance + amount;

   }

   public void withdraw(double amount)

   {

      balance = balance - amount;

   }

   public double getBalance()

   {

      return balance;

   }

}

Look at the code above, and identify the following:

• Constructor
• Field
• Method
• Primitive Type
• Instance Variable

The class above is not a complete Java program that could execute. What would you do to make it execute? Change the program, or add a source code file, to make it into a Java program that executes.

Suggest two other improvements you would make to this code.