Intermediate quizzes – Java constructors

The following Java exercise(s) are designed for intermediate level programmers. If the level is too hard, then I recommend to select an easier one or you might consider reading my article about this topic, which offers a theoretical explanation including more exercises. Read More: Java Constructors


Quiz 1: Using constructors and the keyword “this” in Java.

What is written to the standard output as the result of executing the following code?

public class MyClass {

	int x = 3;
	int y = 5;

	MyClass() {
		x += 1;
		System.out.print("-x" + x);
	MyClass(int i) {
		this.y = i;
		x += y;
		System.out.print("-x" + x);
	MyClass(int i, int i2) {
		this.x -= 4;
		System.out.print("-x" + x);
	public static void main(String[] args){
		MyClass mc1 = new MyClass(4,3);

Select the correct answer.

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Sar Maroof is graduated from HBO Amsterdam "higher professional education". He is a professional computer programming teacher, gives master classes and publishes technical articles. His experience with developing software started from 2001 and he has worked as a software developer for several big as well as small companies and later as a freelancer. He is the author of Java quizmaster and Build a Java application in 7 days.

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