simple program using Dynamic Method Dispatch in Java (Java) (212)

package com.company;
class super1
{
    public void sp()
    {
        System.out.println("this is a super phone");
    }
    public void on()
    {
        System.out.println("super phone starting...");
    }
}
class sub1 extends super1
{
    public void sbp()
    {
        System.out.println("this is a super phone");
    }
    public void on()
    {
        System.out.println("sub phone starting...");
    }
}
public class program49 {
    public static void main(String[] args) {
        super1 obj=new sub1();
        obj.sp();
        obj.on(); //run the on() function of sub class
    }
}