Java

(1) What is factory method and give some Examples ?

The Jave method that is capable of constructing it's own java class object is called factory method.Most of all factory methods are static methods

Ex 1 :  Thread t = Thread.currentThread() ;

The java.lang.Thread.currentThread() method returns a reference to the currently executing thread object.

 Ex 2 : String st = String.valueOf(20):

 String.valueOf(20) Returns the string representation of the int argument 

 Ex 3 : Class c = Class.forName(String className);

 java.lang.Class.forName(String className)  method returns the Class object for the class with the specified name.

Ex 4 : Calendar cal = Calendar.getInstance() ;

Calendar.getInstance() returns a Calendar