Quizzes – Java primitive data types

The following Java exercise(s) are designed to help you understand the article to which it belongs. If the following quizzes are too hard, then I recommend to read the article first, which offers a theoretical explanation including examples and exercises.



Quiz 1: The values of the uninitialized primitive data types in Java.

What happens when the following program is compiled and run?

public class Employee {

	// Primitive data types
	double salary;
	int age;
	boolean isPaid;
	char gender = 'm'; // m = male, f = female

	public static void main(String[] args){
		Employee emp = new Employee();
		System.out.print(" " + emp.salary + ",");
		System.out.print(" " + emp.age + ",");
		System.out.print(" " + emp.isPaid + ",");
		System.out.print(" " + emp.gender);

Select the correct answer.


Quiz 2: An example of Java primitive data types.

What happens when the following program is compiled and run?

public class MyData {

	String name;
	int i;
	int i2 = 4;
	int i3 = i2 / i;

	public static void main(String[] args){
		MyData md = new MyData();

Select the correct answer.

Please, leave your questions, feedback and suggestions in the comments below!
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Sar Maroof is the author of two Java books namely, Java quizmaster for beginners and A guide to build a Java application.
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Applied Science in Physics HBO Amsterdam
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  1. The voice of raotynaliti! Good to hear from you.

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