Java OOPs Test - Sanfoundry

1. What is it called if an object has its own lifecycle and there is no owner?

Association

Encapsulation

Aggregation

Composition

2. Which of the following is a type of polymorphism in Java?

Compile time polymorphism

Multilevel polymorphism

Multiple polymorphism

Execution time polymorphism

3. Which concept of Java is a way of converting real world objects in terms of class?

Abstraction

Inheritance

Encapsulation

Polymorphism

4. When does method overloading is determined?

At run time

At execution time

At coding time

At compile time

5. When Overloading does not occur?

More than one method with same name, same signature, same number of parameters but different type

More than one method with same name, same number of parameters and type but different signature

More than one method with same name, same signature but different number of signature

More than one method with same name but different method signature and different number or type of parameters

6. Method overriding is combination of inheritance and polymorphism?

false

True

7. What is it called where child object gets killed if parent object is killed?

Encapsulation

Aggregation

Association

Composition

8. What is it called where object has its own lifecycle and child object cannot belong to another parent object?

Aggregation

Encapsulation

Association

Composition

9. Which concept of Java is achieved by combining methods and attribute into a class?

Inheritance

Encapsulation

Abstraction

Polymorphism

10. Which of the following is not OOPS concept in Java?

Inheritance

Polymorphism

Encapsulation

Compilation