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For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))

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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 subjectupdated
4350Keyboard reader for Java programming newcomers
I've added a new class of Keyboard Reader for our Java courses [here], for the earlier examples and exercises just after "Hello World". We want to be able to teach people to write a read - calculate - write program early on, but Java inputs require exception handling, and exceptions are objects, and ...
2859Using 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 ...
2414Hello 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, ...
Examples from our training material
Hello.java   "Hello World!" in Java
Two.java   Second Java program - calls methods
Background information
Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from [here].
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
If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Java,Ruby, Lua, Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses at our training centre in Melksham, Wiltshire, England. It's surprisingly cost effective to come on our public courses - even if you live in a different country or continent to us.

We have a technical library of over 700 books on the subjects on which we teach. These books are available for reference at our training centre.

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