java lab 0.5 (16/10/2023)

abstract  class abc
{
    abstract void callme();
    void callmethod()
    {
        System.out.println("I am in callmethod");
    }
}
class xyz extends abc
{
    void callme()
    {
        System.out.println("I am in callme()");
    }
}

public class Demo
{
    public static void main(String[] args)
    {
        abc ob;
        xyz obj=new xyz();
        obj.callmethod();
        obj.callme();
        ob=obj;
        ob.callmethod();
        ob.callme();
    }
}