Question

How can i extend functions only in Java? (not class extends)

/*Example: 
 * year 1990 Alex Kumar 
 * year 1990 Jhon Ya'ay 
 * made this: do not touch modify here */
public static void OldMade()
{
    Connect("+1800PIZZA");        
    Say("MYID:69"); 
    Request("PIZZACITROEN_BLACK");
}

/*Example: 
 * year 2011 Sunil Williams
 * applied which extends 1990 */
public static void MadeInIndia extends this.OldMade
{
    //hidden include Connect("+1800PIZZA");        
    //hidden include Say("MYID:69"); 
    //hidden include Request("PIZZACITROEN_BLACK");
    Send("CorrectionPandit"); 
}

private static void main(Strig args[])
{
    // Try 1 call and get old + new
    MadeInIndia();        

    //execute  Connect("+1800PIZZA");        
    //execute  Say("MYID:69"); 
    //execute  Request("PIZZACITROEN_BLACK"); 
    //execute  Send("CorrectionPandit");
}

Answer 1

Can’t be done. Java’s object-oriented; you only inherit and extend from classes and interfaces.

You don’t “extend” static methods. In the following arrangement, class B’s static version of foo will overshadow that from A. If B needs to call A’s static method, it can do so explicitly:

public class A {

    public static void foo() { System.out("foo for A classes"); }
}

public class B extends A {

    public static void foo() { System.out("foo for B classes"); }
}