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Core java - Interview Questions and Answers for 'Infobrain technologies' - 2 question(s) found - Order By Newest

 Q1. Write Code showing InheritanceCore Java2017-01-28 11:24:03

Ans. class A {
public void test() {
System.out.println("Class A Test");
}
}

class B extends A {
public void test() {
System.out.println("Class B Test");
}
}

 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve          Infobrain Technologies


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or

What is the difference between String , StringBuilder and StringBuffer ?
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  What are different ways to create String Object? Explain.
  Why do we need Inner classes ? Cant we just work with outer classes wherever we implement Inner classes ?
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 Q2. Write a Program / Code showing Inheritance and overriddingCore Java2017-01-28 11:25:21

Ans. class A {
public void test() {
System.out.println("Class A Test");
}
}

class B extends A {
public void test() {
System.out.println("Class B Test");
}

public static void main(String[] args){
A a = new B();
a.test(); // will print Class B Test
}
}

 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve          Infobrain Technologies


Related Questions

  Difference between == and .equals() ?
  Why is String immutable in Java ?
  Explain the scenerios to choose between String , StringBuilder and StringBuffer ?

or

What is the difference between String , StringBuilder and StringBuffer ?
  What are the difference between composition and inheritance in Java?
  What are different ways to create String Object? Explain.
  Why do we need Inner classes ? Cant we just work with outer classes wherever we implement Inner classes ?
  Does garbage collection guarantee that a program will not run out of memory?
  What do you mean by "Java is a statically typed language" ?
  Why Char array is preferred over String for storing password?
  What is the difference between Encapsulation and Abstraction?




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