Java Program for SavingAccount and methods withdraw, deposit, view Balance - IProgramX

Q. Define a class SavingAccount (acNo, name, balance). Define appropriate constructors and operations withdraw(), deposit() and view Balance(). The minimum balance must be 500. Create an object and perform operations. Raise user defined Insufficient Funds Exception when balance is not sufficient for withdraw operation

Program:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import javax.naming.InsufficientResourcesException;

class SavingAccount{
int acNo;
String name;
double balance;
public SavingAccount(){
acNo=0;
name=null;
balance=500.0;
}
public void accept()throws IOException{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the account number, name, and balance for the customer: ");
acNo=Integer.parseInt(br.readLine());
name=br.readLine();
balance=Double.parseDouble(br.readLine());

}
public void withdraw() throws IOException{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the amount you want to withdraw: ");
double wamt=Double.parseDouble(br.readLine());
try{
double bal=balance; bal=bal-wamt;
if(bal<500)
throw new InsufficientResourcesException("Insufficient Balance");
balance=balance-wamt;
System.out.println("Withdrawal Successful...!!!");
}
catch(InsufficientResourcesException e){
System.out.println("Exception: "+e.getMessage());
}
}
public void deposit() throws IOException{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the amount you want to deposit: ");
double damt=Double.parseDouble(br.readLine());
balance=balance+damt;
System.out.println("Deposit Successful....!!");
}
public void viewBalance(){
System.out.println("The balance is "+balance);
}

}

public class a4sa2 {
public static void main(String [] args) throws IOException{
System.out.println("Enter the number of customers: ");
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
int n=Integer.parseInt(br.readLine());
SavingAccount[] sa=new SavingAccount[n];
for(int i=0;i<n;i++){
sa[i]=new SavingAccount();
sa[i].accept();
}
int no=0;
System.out.println("Enter the customer Number");
no=Integer.parseInt(br.readLine());
no--;
int ch=0;
while(ch!=4){
System.out.println("1. Withdraw");
System.out.println("2. Deposit");
System.out.println("3. View Balance");
System.out.println("4. Quit");
                        System.out.println("Select Any Option:");
ch=Integer.parseInt(br.readLine());
switch(ch){
case 1: sa[no].withdraw();
break;
case 2: sa[no].deposit();
break;
case 3: sa[no].viewBalance();
break;
}
}
}

}

Output:

Enter the number of customers: 
2

//Enter details for customer 1
Enter the account number, name, and balance for the customer: 
1
rusher
1200

//Enter details for customer 2
Enter the account number, name, and balance for the customer: 
2
suresh
13000

Enter the customer Number : 1

1. Withdraw
2. Deposit
3. View Balance
4. Quit

Select Any Option: 3  //select any operation to perform

The balance is 1200.0

1. Withdraw
2. Deposit
3. View Balance
4. Quit

Select Any Option: 1

Enter the amount you want to withdraw: 1200

Exception: Insufficient Balance //because balance can't be zero

1. Withdraw
2. Deposit
3. View Balance
4. Quit

Select Any Option: 2

Enter the amount you want to deposit: 5000 //deposit amount

Deposit Successful....!!

1. Withdraw
2. Deposit
3. View Balance
4. Quit

Select Any Option: 3

The balance is 6200.0 //confirm deposited amount