জাভা এনক্যাপ্সুলেশন কি উদাহরণ সহ - Encapsulation in java

এনক্যাপ্সুলেশন কি ? (what is Encapsulation in java in bangla)

Encapsulation is a mechanism through which we can binding the data member and member methods in a single units.

import java.util.Scanner;
public class Bank {
    private int balance=10000;
    private int pwd;
    
    public void Deposite(int money)
    {
        System.out.println("Enter Your Password Please ");
        Scanner P=new Scanner(System.in);
        pwd = P.nextInt();
        if(pwd==567)
        {
            balance=balance+money;
            System.out.println("Deposite Money "+money);
            System.out.println("Total Money "+balance);
        
        }
        else
        {
            System.out.println("Wrong Password");
        }
    }
    
      public void Withdraw(int money)
    {
        System.out.println("Enter Your Password Please ");
        Scanner P=new Scanner(System.in);
        pwd = P.nextInt();
        if(pwd==567)
        {
            balance=balance-money;
            System.out.println("Withdraw Money "+money);
            System.out.println("Total Money "+balance);
        
        }
        else
        {
            System.out.println("Wrong Password");
        }
    }
      
      public void Chackbalance()
    {
        System.out.println("Enter Your Password Please ");
        Scanner P=new Scanner(System.in);
        pwd = P.nextInt();
        if(pwd==567)
        {
            System.out.println("Total Money "+balance);
        
        }
        else
        {
            System.out.println("Wrong Password");
        }
    }
    
}
 class customer1 {
    public static void main(String[] args)
    {
        Bank b= new Bank();
        int num,num2;
         System.out.println("Enter Your Choice ");
         System.out.println("1. Deposite");
         System.out.println("2.Withdraw");
         System.out.println("3. Chack Balance");
         
         Scanner S2=new Scanner(System.in);
         num=S2.nextInt();
         switch(num)
         {
             case 1: 
                 System.out.println("Enter Your Deposite amount ");
                 Scanner S3=new Scanner(System.in);
                 num2=S3.nextInt();
                 b.Deposite(num2);
             break;
             
             case 2:
                   System.out.println("Enter Your Withdraw amount ");
                 Scanner S4=new Scanner(System.in);
                 num2=S4.nextInt();              
                 b.Withdraw(num2);
             break;
             case 3: b.Chackbalance();
             break;
             default:
                 System.out.println("Wrong choice ");
               
                    
         }
    }
}