Design Pattern (Abstract Factory)

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Public class factorymethod {/*** @ Param ARGs */public static void main (string [] ARGs) {factory. condition (2 ). operation ("hello") ;}} class factory {public static API condition (int n) {If (n = 1) {return New IMPA ();} else if (n = 2) {return New impb ();} return NULL ;}} interface API {void operation (string );} class IMPA implements API {@ override public void operation (string a) {system. out. println ("impletmenta S =" + a) ;}} class impb implements API {@ override public void operation (string a) {system. out. println ("implementb S =" + );}}

Instead of exposing specific implementation classes, the factory method is used to return specific implementation classes.

Interface: Used to encapsulate links