Core Java - Interview Questions and Answers for 'Static' | Search Interview Question

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Q61. How can you verify if there were interactions with a static method using PowerMock ?

Ans. We can use PowerMockito.verifyStatic for this purpose

PowerMockito.verifyStatic(VerificationModeFactory.times(1));
<Class_Name>.<static_method_name>;

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Related Questions

Have you ever tried mocking static methods ?

Have you ever used PowerMock ? If yes , which mocking framework you have used it with ?

Q62. Can a constructor be declared static ? Why ?

Core Java

Ans. No.

When we declare a method static, it means that "this belongs to class as whole and not particular instance". The whole purpose of constructor is to initialize a object and hence there is no sense having static constructor.

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Related Questions

What are the common uses of "this" keyword in java ?

Can we use both "this()" and "super()" in a constructor ?

Why every object constructor automatically call super() in Object before its own constructors?

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Does Constructor creates the object ?

What are constructors and Destructors in Java ?

Are constructors inherited? Can a subclass call the parent's class constructor? When?

Difference between object instantiation and construction ?

How can we create objects if we make the constructor private ?

Difference Between this() and super() ?

Q63. Can the value of a static variable be changed ?

Core Java

Ans. Yes the value of a static variable can be changed. It's the final keyword that restrict the modification of value not static.

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Difference between == and .equals() ?

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or

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Explain OOPs

or

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Q64. What will be the output of executing following class ?

public class BuggyBread {

static {
System.out.println("Static Block");
}

{
System.out.println("Initialization Block");
}

BuggyBread(){
System.out.println("Constructor");
}

public static void main(String[] args){
System.out.println("Main Method");
}
}

Core Java

a. Static Block
Main Method

b. Static Block
Instance Initialization Block
Main Method

c. Static Block
Constructor
Main Method

d. Static Block
Instance Initialization Block
Constructor
Main Method

Ans.a. Static Block
Main Method

Q65. What will be the output upon executing following class ?

public class BuggyBread {

static {
System.out.println("Static Block");
}

{
System.out.println("Instance Initialization Block");
}

BuggyBread(){
System.out.println("Constructor");
}

public static void main(String[] args){
System.out.println("Main Method");
new BuggyBread();
}
}