Question

How would I alter this code to have the output to show the exceptions for not just the negative starting balance and negative interest rate but a negative deposit as well? Here is the class code for BankAccount:

/**
* This class simulates a bank account.
*/
public class BankAccount
{
private double balance; // Account balance
private double interestRate; // Interest rate
private double interest; // Interest earned

/**
* The constructor initializes the balance
* and interestRate fields with the values
* passed to startBalance and intRate. The
* interest field is assigned to 0.0.
*/

public BankAccount (double startBalance,
double intRate, double depAmt) throws NegativeStartingBalance,
                       NegativeInterestRate,
                                               NegativeDeposit
{
   if (startBalance < 0)
       throw new NegativeStartingBalance(startBalance);
   if (intRate < 0)
       throw new NegativeInterestRate (intRate);
   if (depAmt < 0)
       throw new NegativeDeposit (depAmt);
     
   deposit amount = depAmt;
balance = startBalance;
interestRate = intRate;
interest = 0.0;
}

/**
* The deposit method adds a parameter
   *amount to the balance field.
*/

public void deposit(double amount)
{
balance += amount;
}

/**
* The withdraw method subtracts the
   * parameter amount from the balance
   * field.
*/

public void withdraw(double amount)
{
balance -= amount;
}

/**
* The addInterest method adds the interest
* for the month to the balance field.
*/

public void addInterest()
{
interest = balance * interestRate;
balance += interest;
}

/**
* The getBalance method returns the balance.
* returns the value in the balance field.
*/

public double getBalance()
{
return balance;
}

/**
* The getInterest method returns the interest
* value in the interest field.
*/

public double getInterest()
{
return interest;
}
}

Here is the driver, AccountTest.java:

/**
* This program demonstrates the BankAccount class
* throws exceptions.
*/

public class AccountTest
{
public static void main(String [] args)
{
   // Force a NegativeStartingBalance exception.
   try
   {
       BankAccount account = new BankAccount(-1,0.04);
   }
   catch(NegativeStartingBalance e)
   {
       System.out.println(e.getMessage());
   }
   catch (NegativeInterestRate e)
   {
       System.out.println(e.getMessage());
   }

   // Force a NegativeInterestRate exception.
   try
   {
       BankAccount account = new BankAccount(100,-0.04);
   }
       catch(NegativeStartingBalance e)
       {
           System.out.println(e.getMessage());
       }
       catch(NegativeInterestRate e)
       {
           System.out.println(e.getMessage());
       }         
}
}   
Here is my NegativeInterestRate.java:

/**
* NegativeInterestRate exceptions are thrown by the
* BankAccount class when a negative interest rate is
* passed to the constructor.
*/

public class NegativeInterestRate extends Exception
{  
   /**
   * No-arg constructor
   */
  
   public NegativeInterestRate()
   {
       super("Error negative interest rate");
   }
  
/**
* The following constructor accepts the amount that
   * was given as the interest rate.
   */
  
   public NegativeInterestRate(double amount)
   {
       super("Error: Negative interest rate: " + amount);
   }
}  

Here is my NegativeStartingBalance.java:

/**
* NegativeStartingBalance exceptions are thrown by
* the BankAccount class when a negative starting
* balance is passed to the constructor.
*/

public class NegativeStartingBalance extends Exception
{
/**
* No-arg constructor
*/

   public NegativeStartingBalance()
   {
       super("Error: Negative starting balance");
   }
  
   /**
   * The following constructor accepts the amount
   * that was given as the starting balance.
   */
  
   public NegativeStartingBalance(double amount)
   {
           super("Error: Negative starting balance: " +
           amount);
   }
}

So, I am asking for a new class to handle the exception for a negative deposit and for the output of TestAccount to show Error: Negative Starting Balance, Error: Negative interest rate, and Error: Negative Deposit.

Thank you