Hello Java World

Java module J702

Hello Java World

Exercises, examples and other material relating to training module J702. This topic is presented on public courses Learning to Program in Java, Java Bootcamp, Java Programming for the Web

In this module we write the simplest of programs - a program which displays the words "Hello World". This shows you how to use the editor, compiler and runtime environment that you'll be using in subsequent models and gives you a minimal framework on which to expand.

Related technical and longer articles

Overview of Java
Hello Java World

Articles and tips on this subject		updated
2859	Using java, javac, jar, and CLASSPATH - a simple example What Version of Java am I running? How do I edit, compile and run a Java program? What does this error message mean? How do I puts lots of classes into a single file, then run them from that file? How do I see what's in that file? How do I get Java to look for a class it needs in a series of ...	2010-07-07
2414	Hello World - a good traditional start to a Java course All programming courses, it seems, start with a "Hello World" program. It's almost a tradition and while I'm not one of those people who follows traditions just for their sake, traditions usually are founded on good reason. This one is, and we follow it! When you come new to a programming language, ...	2009-09-22

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Examples from our training material

Hello.java	"Hello World!" in Java
Two.java	Second Java program - calls methods

Background information

This module is available under an Open Training Notes License for free download from http://www.training-notes.co.uk.

Topics covered in this module

A first program explained.
Methods and classes.
Blocks and statement structure.
Declaring classes and methods.
Within a statement.
Reserved words.
Commenting your source.
The code in operation.
A further program.

Complete learning

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