Beginner Quizzes – Java Inheritance

The following Java exercise(s) are designed for beginner level programmers. If the level is too hard, then I recommend reading my article about this topic, which offers a theoretical explanation including more exercises. Read More: Java Inheritance.

Article: Java inheritance Quizzes: Beginner  Intermediate  Advanced

 

Quiz 1: Easy Java Inheritance

What happens when the following program is compiled and run?

public class MySuper {

	protected String s = "Charles";

	void method(){
		System.out.print(s);
	}
}

class MySub extends MySuper {

	String s = "Emma";

	MySub() {
		System.out.print(super.s);
	}
	void method(){
		System.out.print(s);
		super.method();
	}
	public static void main(String[] args){
		MySub mySub = new MySub();
		mySub.method();
	}
}

Please, leave your questions, feedback and suggestions in the comments below! If you need more explanation by any of the answers, just let me know to update it for you!

Quiz 2: Inheriting a super class in Java

What happens when the following program is compiled and run?

public class Super {

	int a = 1;

	Super() {
		a = 5;
	}
}

public class Sub extends Super {

	Sub(int a) {
		System.out.print("-a" + a + "-a" + super.a);
	}
	public static void main(String[] args){
		Sub sub = new Sub(2);
	}
}

Please, leave your questions, feedback and suggestions in the comments below! If you need more explanation by any of the answers, just let me know to update it for you!

Megisoft.com offers a practical method to learn and improve your Java skills. It avoids unnecessary long boring theoretical explanations, but it uses many exercises and quizzes. The author of Megisoft is Sar Maroof who has more than a decade of experience with web development mainly with Java, MySql, HTML and more..

Article: Java inheritance Quizzes: Beginner  Intermediate  Advanced

Suggested Articles:

Sar Maroof's New Book "Java Quizmaster For Beginners"

Author: Sar Maroof Many years of experience with developing web applications mainly with Java. Sun Certified JSP as well as EJB CIW Certified Internet Webmaster Applied Science in Physics HBO Amsterdam Bachellor Science in Physics at Basra university.

Subscribe To sarmaroof RSS Feeds! (Your Browser)  Mail This Page To A Friend!  Bookmark This Page!