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Q:

Why static method can not call non static method of the same class?

Answer

bcoz the static method does not contains the 'this' reference.

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Subject: Java

Q:

What is anonymous class?

Answer

Anonymous class is class without name.


EX:


class A {


}


class Demo {


    A r = new A() {


        }; //anonymous class


}


 

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Subject: Java

Q:

What is local class?

Answer

Local class is class defined inside method


EX;


class A { // top level class


  public static void main(string[] args) {


   class B { // local class


   }


}


}

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Subject: Java

Q:

what is non-static member class?

Answer

Non-static member class is a class defined inside outer class with out static modifier.


EX:


class A { // top level class or outer class


    ......


    class B { //non-static member class


    }


    .....


}

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Subject: Java

Q:

What is static member class?

Answer

Static member class is a class defined inside outer class with static modifier.


EX:


Class A {  //top level class or outer class


    .....


    static class B {  //static member class


    }


   .....


}

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Subject: Java

Q:

What is top level class?

Answer

Top level class is also called outer class. It is not defined inside any class.


Ex:


class A {  //top level class


 


}

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Subject: Java

Q:

How many types of classes are there in Java?

Answer

Two types of classes:


1) Top Level Class


2) Classes within Class


       i) member classes


             a) static member class


             b) non static member class


      ii) local classes


      iii) anonymous classes

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Subject: Java

Q:

What is Binary Portability Testing?

Answer

Testing an executable application for portability across system platforms and environments, usually for conformation to an ABI specification.

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Subject: QA Testing