Inheritance Interview Questions Mock Test

Question 1: JAVA OOPS - Single Inheritance

Which of the following is true about single inheritance in Java?

Question 2: JAVA OOPS - Multilevel Inheritance

What will be printed?

class A { void msg() { System.out.println("A"); } }
class B extends A { void msg() { System.out.println("B"); } }
class C extends B {}
public class Main {
    public static void main(String[] args) {
        C obj = new C();
        obj.msg();
    }
}

Question 3: JAVA OOPS - Hierarchical Inheritance

Which is true about hierarchical inheritance?

Question 4: JAVA OOPS - Method Overriding in Inheritance

What will be printed?

class A { void show() { System.out.println("Parent"); } }
class B extends A { void show() { System.out.println("Child"); } }
public class Main {
    public static void main(String[] args) {
        A a = new B();
        a.show();
    }
}

Question 5: JAVA OOPS - super Keyword

Which statement is true about super keyword?

Question 6: JAVA OOPS - Multiple Inheritance

Why is multiple inheritance not allowed with classes in Java?

Question 7: JAVA OOPS - Constructor Execution Order

What will be printed?

class A { A() { System.out.println("A"); } }
class B extends A { B() { System.out.println("B"); } }
public class Main {
    public static void main(String[] args) {
        B b = new B();
    }
}

Question 8: JAVA OOPS - Inheritance and Private Members

Which of the following statements is true?

Question 9: JAVA OOPS - final Keyword with Inheritance

Which statement is true?

Question 10: JAVA OOPS - Abstract Class and Inheritance

Which is true about abstract class inheritance?