This Exercise contains a SavingsTest and a Savings class. The SavingsTest class

Question

This Exercise contains a SavingsTest and a Savings class. The SavingsTest class makes deposits and withdrawals from the Savings class, then reports the balance and transactions.

The Savings class has a balance data field and transaction ArrayList. You will need to:
1. Create the Constructors for the Savings class
2. Write the code for the withdraw() method.
3. Create a get and set method for the balance class
4. Understand how everything works in these classes.

Example Output
88.54 deposited
23.98 withdrawn
88.34 deposited
144.98 withdrawn

Ending Account Balance: $107.92
88.54 deposited, the new balance is $188.54
23.98 withdrawn, the new balance is $164.56
88.34 deposited, the new balance is $252.90
144.98 withdrawn, the new balance is $107.92

What I have so far:

import java.util.*;
/**
*
* @author Student
*/
public class SavingsTest {

public static void main(String[] args) {
Savings savings = new Savings(100.00);

// this calls a method called deposit that adds to the savings balance
System.out.println(savings.deposit(88.54));

// this calls a method called withdraw that subtracts from the balance
System.out.println(savings.withdraw(23.98));
// more transactions
System.out.println(savings.deposit(88.34));
System.out.println(savings.withdraw(144.98));

// generate output for the account balances
System.out.printf(" Ending Account Balance: $%.2f ",savings.getBalance());
System.out.println(savings.getStatement());   
} // end main method   
} // end SavingsTest class

//******************************************
//** Savings class below this box **
//******************************************

class Savings {
private double balance;
private ArrayList <String> transaction = new ArrayList();

//*** create constructors here ****

public String deposit(double input){
balance += input;
transaction.add(String.format("%.2f deposited, the new balance is $%.2f",
input,balance));
return String.format("%.2f deposited",input);
}
  
public String getStatement(){
String returnStr ="";
for(String trans:transaction){
returnStr += trans + " ";
}
return returnStr;
}

public String withdraw(double input){
// create code for withdraw class
}

// Enter gets and sets for the balance data field

Explanation / Answer

import java.util.*;
/**
*
* @author Student
*/
class SavingsTest {
public static void main(String[] args) {
Savings savings = new Savings(100.00);

// this calls a method called deposit that adds to the savings balance
System.out.println(savings.deposit(88.54));

// this calls a method called withdraw that subtracts from the balance
System.out.println(savings.withdraw(23.98));
// more transactions
System.out.println(savings.deposit(88.34));
System.out.println(savings.withdraw(144.98));

// generate output for the account balances
System.out.printf(" Ending Account Balance: $%.2f ",savings.getBalance());
System.out.println(savings.getStatement());   
} // end main method   
} // end SavingsTest class
//******************************************
//** Savings class below this box **
//******************************************
class Savings {
private double balance;
private ArrayList <String> transaction = new ArrayList();

// constructor that takes double and initializes balance
public Savings(double bal)
{
balance = bal;
}
public String deposit(double input){
balance += input;
transaction.add(String.format("%.2f deposited, the new balance is $%.2f", input,balance));
return String.format("%.2f deposited",input);
}
  
public String getStatement(){
String returnStr ="";
for(String trans:transaction){
returnStr += trans + " ";
}
return returnStr;
}
  
// just like deposit method but to subtract the amount
public String withdraw(double input){
balance -= input;
transaction.add(String.format("%.2f withdrawn, the new balance is $%.2f", input,balance));
return String.format("%.2f withdrawn",input);
}
  
// GETTER AND SETTER
public void setBalance(double balance){
this.balance = balance;
}
public double getBalance(){
return balance;
}
}

// CODE

/* SAMPLE OUTPUT

*/

import java.util.*;
/**
*
* @author Student
*/
class SavingsTest {
public static void main(String[] args) {
Savings savings = new Savings(100.00);

// this calls a method called deposit that adds to the savings balance
System.out.println(savings.deposit(88.54));

// this calls a method called withdraw that subtracts from the balance
System.out.println(savings.withdraw(23.98));
// more transactions
System.out.println(savings.deposit(88.34));
System.out.println(savings.withdraw(144.98));

// generate output for the account balances
System.out.printf(" Ending Account Balance: $%.2f ",savings.getBalance());
System.out.println(savings.getStatement());   
} // end main method   
} // end SavingsTest class
//******************************************
//** Savings class below this box **
//******************************************
class Savings {
private double balance;
private ArrayList <String> transaction = new ArrayList();

// constructor that takes double and initializes balance
public Savings(double bal)
{
balance = bal;
}
public String deposit(double input){
balance += input;
transaction.add(String.format("%.2f deposited, the new balance is $%.2f", input,balance));
return String.format("%.2f deposited",input);
}
  
public String getStatement(){
String returnStr ="";
for(String trans:transaction){
returnStr += trans + " ";
}
return returnStr;
}
  
// just like deposit method but to subtract the amount
public String withdraw(double input){
balance -= input;
transaction.add(String.format("%.2f withdrawn, the new balance is $%.2f", input,balance));
return String.format("%.2f withdrawn",input);
}
  
// GETTER AND SETTER
public void setBalance(double balance){
this.balance = balance;
}
public double getBalance(){
return balance;
}
}

// CODE

/* SAMPLE OUTPUT

  88.54 deposited  23.98 withdrawn  88.34 deposited  144.98 withdrawn    Ending Account Balance: $107.92  88.54 deposited, the new balance is $188.54  23.98 withdrawn, the new balance is $164.56  88.34 deposited, the new balance is $252.90  144.98 withdrawn, the new balance is $107.92   

*/

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