Help for write Bank application in Java

[clapton]

Hi.
I'm a student and I need write a programe bank application in java .
I must write a program that the customer could withdraw and deposit from his account.I wrote this program.
but I need to use several classes for this program. for exemple:
BankAccount which has an instance variable amount
and has methods:
withDraw which takes a parameter -> amountToWithDraw
deposit -> amountToAdd
checkBalance -> which takes no parameters, but which returns the value in the instance variable amount.
but i dont know how use of several classes.
you can help me?

import java.util.Scanner;
 
 public class BankAccount {
 public static void main(String[] args) {
      
     Scanner clapton=new Scanner(System.in);
     int x;
     float balance = 0;
     boolean quit=false;
       do {
         System.out.println("1. Deposit money");
 
         System.out.println("2. Withdraw money");
  
         System.out.println("3. Check balance");
   
         System.out.print(" 0 to quit: ");
  
         System.out.println("enter your choice :");
    
      x=clapton.nextInt();
                  if (x==1) {
   
         float amount;
         System.out.println(" Amount to deposit :");
         amount=clapton.nextFloat();  
         if (amount>=0) {              
      balance += amount;                  
}                   
 else {                  
   System.out.println("system can't reply your request");   
  }
 
}
else if (x==2) {   
     float amount;    
    System.out.println(" Amount to withdraw :");   
     amount =clapton.nextFloat();         
            if (amount<=0 || amount > balance) { 
                 System.out.println("system can't reply your request ");
                              
   }          
                   else {
                       balance -= amount; 
   } 
}
else if (x==3) {     
   System.out.println("your balance :" + balance );
}
else if (x==0) {     
   quit=true;
}
else {
        System.out.println("wrong choice");
  }
}
  while (!quit);
        System.out.println("bye");
   }
}

[santa]

Classes (The Java™ Tutorials > Learning the Java Language > Classes and Objects)


Well you need to use objects... I guess?

[clapton]

you can say how I use objects for this program?

[santa]

Each account can be viewed as an Object ... check the link i provided

[JosAH]

Object oriented programming starts with realizing that you don't just have to specify what needs to be done, but also who (or what again) needs to do it. In your program everything is done in a main( ... ) method.

kind regards,

Jos