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Beginner Quizzes – Java Constructors

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 Constructors

Article: Java constructors
Quizzes: Beginner  Intermediate  Advanced 

constructors-green

Quiz 1: Java Constructors

What happens when you try to compile and run the following program?

public class MyConstructor {

	int x = 5;

	MyConstructor() {
		System.out.print("-x" + x);
	}
	MyConstructor(int x) {
		this();
		System.out.print("-x" + x);
	}
	public static void main(String[] args){
		MyConstructor mc1 = new MyConstructor(4);
		MyConstructor mc2 = new MyConstructor();
	}
}

Select the correct answer.



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: Java Constructors, Student

What happens when you try to compile and run the following program?

public class Student {

	String name;
	int age;
	String phone;

	Student() {}
	Student(String name, int age, String phone) {
		this.phone = phone;
		this.name = name;
	}
	public static void main(String[] args){
		Student s1 = new Student();
		Student s2 = new Student("John",25,"029-998877");
		System.out.print(s2.name + ", " + s2.age + ", " + s2.phone);
	}
}

Select the correct answer.



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 constructors
Quizzes: Beginner  Intermediate  Advanced 

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Click Here For Info about: Sar Maroof's New Java Book
Author: Sar Maroof
More than a decade of experience with developing web applications mainly with Java.
Sun Certified JSP as well as EJB
CIW Certified Internet Webmaster - Mind IT
Applied Science in Physics HBO Amsterdam
Bachellor Science in Physics at Basra university.
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