Take 2 classes.i.e., Class A,Class B. In Class B declare constructor as Private.But I have to access Class A using the constructor in Class B. How is it possible?One interviewer told that Through getInstance() method it's possible to access Class A.e Even Class B declare as Private. How is it possible? Explain with an example.

meetnaveen4u

 Profile Answers by meetnaveen4u 

• Oct 10th, 2006

 

Hi.

Yes its true when u have method in ClassB as getInstance() which return the new ClassB(). Here it is about creating singleton object of ClassB which returns only one instance at give point.

hanu2782

 Profile Answers by hanu2782 

• Nov 5th, 2006

 

Give example of that and explain it please.

Suneet Jain

• Nov 20th, 2006

 

class A {

    public static void main(String[] as) {

        B b = B.getInstance(); // get the instance of Class B and store it in variable b

    }

}

class B {

    private B() {}

    public static B getInstance() {

        return new B();

    }