package javaapplication9;


public abstract class User {

    protected String userid,password;


    public User(String userid, String password) {
        this.userid = userid;
        this.password = password;
    }


    public void display()
    {
        System.out.println(userid+"\n"+password);
    }

}

package javaapplication9;


public  class Customer extends User{
    private String name,email;

    public Customer(String c,String d)
    {
       super("1u23","saji89");
        name=c;
        email=d;
        System.out.println(name+"\n"+email);
    }
    public static void main(String[] args)
    {

         Customer obj=new Customer("Sajib Ahmed Shanto","[email protected]");
              obj.display();


              Item ob1=new Item("aaaaaa",200.00);
              ob1.display();
    }


}

package javaapplication9;


public class Item {
    private String itename;
    private double price;
    public Item(String l,double i)
    {
        itename=l;
        price=i;
    }
    public void display()
    {
        System.out.println(itename+"\n"+price);

    }

}