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Java Tutorial

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Java is a programming language.

Java is used to develop mobile apps, web apps, desktop apps, games and much more.

Start learning Java now »

Examples in Each Chapter

Our "Show Java" tool makes it easy to learn Java, it shows both the code and the result.

Example

public class MyClass {
  public static void main(String[] args) {
    System.out.println("Hello World");
  }
}
Run example »

Click on the "Run example" button to see how it works.

We recommend reading this tutorial, in the sequence listed in the left menu.

Java Exercises

Test Yourself With Exercises

Exercise:

Insert the missing part of the code below to output "Hello World".

public class MyClass {
  public static void main(String[] args) {
    ..("Hello World");
  }
}

Start the Exercise

Learn by Examples

Examples are better than 1000 words. Examples are often easier to understand than text explanations.

This tutorial supplements all explanations with clarifying examples.

See All Java Examples

Download Java

Download Java from the official Java web site: https://www.oracle.com

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