Question

Use the Java codes below (Checking Account and Checking Account Demo), and work on these problems. You have to do both of your java codes based on the two provided Java codes.

1. Create one method for depositing and one for withdrawing.
   1. The deposit method should have one parameter to indicate the amount to be deposited. You must make sure the amount to be deposited is positive.
   2. The withdraw method should have one parameter to indicate the amount to be withdrawn and use Boolean return type to show the success of the operation. If the amount to be withdrawn is negative or one tries to over-withdraw (i.e the withdrawing amount is more than the balance), make no change on the balance and return false. If the withdrawn amount is allowed, update the balance by subtracting this withdrawing amount from it and then return true.
2. Create a displayAccount() method.
   1. Print a nice head that includes the customer’s name (similar to the Employee class example)
   2. Display the account number, owner’s name, and current balance, each at a separate line
3. Modify the main method in the CheckingAccountDemo class
   1. Ask for the name, account number, and initial balance for one account from the keyboard input. Create a CheckingAccount object and initialize it using the constructor and the keyboard input values on name, account number, and initial balance. Call the displayAccount() method to print the summary of this account.
   2. Ask user to input the deposit amount from keyboard, then deposit it into the account you created by calling the deposit method of the CheckingAccount object you have created. Call the displayAccount() method to print the summary of this account.
   3. Ask user to input the withdraw amount from keyboard, then try to withdraw that amount from the account object. If the operation is successful, call the displayAccount() method to print the summary of this account. Otherwise print the error information that the withdrawing operation failed.

CHECKING ACCOUNT JAVA:

public class CheckingAccount {
   private int AccNumber;
   private String Owner;
   private double Balance;
  
   CheckingAccount(int AccNumber, String Owner, double Balance)
   {
   if(Balance<0)
   {
   System.err.println("Error. The Balance can't be negative");
   this.Balance = 0.0;
   }
   else
   this.Balance = Balance;
   this.AccNumber = AccNumber;
   this.Owner = Owner;
  
  
   }
   // setter functions
   void setAccNumber(int AccNumber)
   {
   this.AccNumber = AccNumber;
   }
   void setOwner(String Owner)
   {
   this.Owner = Owner;
   }
   void setBalance(double Balance)
   {
   if(Balance<0)
   {
   System.err.println("Error. The Balance can't be negative");
   this.Balance = 0.0;
   }
   else
   this.Balance = Balance;
   }
   //getter functions
   int getAccNumber()
   {
   return this.AccNumber;
   }
   String getOwner()
   {
   return this.Owner;
   }
   double getBalance()
   {
   return this.Balance;
   }
}

CHECKING ACCOUNT DEMO.JAVA

import java.util.*;
public class CheckingAccountDemo {
public static void main(String[] args)
{
double balance;
String ownerName;
int accountNumber;
Scanner input = new Scanner(System.in);
System.out.println("Enter the name of owner of account: ");
ownerName = input.nextLine();
System.out.println("Enter the account Number: ");
accountNumber = input.nextInt();
System.out.println("Enter the account balance: ");
balance = input.nextDouble();
CheckingAccount object1 = new CheckingAccount(accountNumber,ownerName,balance);
//calling getter functions
System.out.println("Name : "+object1.getOwner());
System.out.println("Account number : "+ object1.getAccNumber());
System.out.println("Available balance : "+object1.getBalance());
}

}

Answer 1

CheckingAccount.java

public class CheckingAccount {
private int AccNumber;
private String Owner;
private double Balance;
  
CheckingAccount(int AccNumber, String Owner, double Balance)
{
if(Balance<0)
{
System.err.println("Error. The Balance can't be negative");
this.Balance = 0.0;
}
else
this.Balance = Balance;
this.AccNumber = AccNumber;
this.Owner = Owner;
  
  
}
// setter functions
void setAccNumber(int AccNumber)
{
this.AccNumber = AccNumber;
}
void setOwner(String Owner)
{
this.Owner = Owner;
}
void setBalance(double Balance)
{
if(Balance<0)
{
System.err.println("Error. The Balance can't be negative");
this.Balance = 0.0;
}
else
this.Balance = Balance;
}
//getter functions
int getAccNumber()
{
return this.AccNumber;
}
String getOwner()
{
return this.Owner;
}
double getBalance()
{
return this.Balance;
}

//method for display account details
void displayAccount(){
System.out.println("Name : "+getOwner());
System.out.println("Account number : "+ getAccNumber());
System.out.println("Available balance : "+getBalance());
}

//method for deposit
void depositAmount(double value){
if(value<0){
System.out.println("Amount should be positive");
}
else{
this.Balance+=value;
}
}

//method for withdraw
boolean withdrawAmount(double value){
if(value<0 || this.Balance<value){
return false;
}
else
{
this.Balance-=value;
return true;
}
}
}

CheckingAmountDemo.java

import java.util.*;

public class CheckingAccountDemo {
public static void main(String[] args){
double balance;
String ownerName;
int accountNumber;
Scanner input = new Scanner(System.in);
System.out.println("Enter the name of owner of account: ");
ownerName = input.nextLine();
System.out.println("Enter the account Number: ");
accountNumber = input.nextInt();
System.out.println("Enter the account balance: ");
balance = input.nextDouble();
CheckingAccount object1 = new CheckingAccount(accountNumber,ownerName,balance);
  
//calling displayAccount method
object1.displayAccount();

System.out.println("Enter amount to be Deposit:");
double deposit_amount=input.nextDouble();
//calling deposit account
object1.depositAmount(deposit_amount);
object1.displayAccount();
System.out.println("Enter amount to be Withdraw:");
double withdraw_amount=input.nextDouble();

//calling withdrawAmount method
if(object1.withdrawAmount(withdraw_amount)){
System.out.println("Amount withdrawn successfully");
}
else{
System.out.println("Please check enter amount with current balance");
}
object1.displayAccount();
}

}