Java - General

Java module J050

Java - General

Exercises, examples and other material relating to training module J050. This module is presented on Private Courses and Specially Run Courses only

Background

Java uses a virtual machine to allow portable code to be written, at the expense of some performance hit. Developed and provided by Sun Microsystems, Java is provided with the most enormous libraries which allow what is basically a small and simple language to spread its tentacles far and wide.

Related technical and longer articles

Overview of Java

Articles and tips on this subject		updated
3573	New in Java 7 - and why we are not running public Java 7 courses Java 7 (or Java 1.7, if you prefer that name) was launched last summer, with new / improved features including: * switch on a String object * try with resources allowing easier cleanup / reducing memory leak potential * catch allowing multiple exceptions in the same block to avoid need to repair code * ...	2012-01-14
2861	MySQL and Java - connectivity past, present, and future thoughts MySQL has migrated from MySQL AB (1995 to 2008) to Sun (2008 to 2010) to Oracle (from 27 Jan 2010) wizard:java graham$ /usr/local/mysql/bin/mysql -uwellho -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.1.48 MySQL Community ...	2010-07-09
2504	Learning to program in ... These are bullet point topics to accompany the "Learning to program in ..." days which are available to complete novices in front of Well House Consultants programming courses. The day is presented using examples in PHP, Lua, Python, Ruby, C, C++, Tcl, Java or Perl as appropriate, with examples written ...	2009-11-29
2420	Exceptions in Java - why and how Although it's common practise to include a static main test program in a class, it's something that newcomers can have some difficulty following ... so we don't do it too early on the course - we keep classes and programs that use those classes (even if they are just test programs) each in their own ...	2009-09-25
2417	Java Programming Fundamentals Java Programming Fundamentals - sample programs from "hello world" through to objects, inheritance, arrays, packages and utility classes! This week, I'm running a small Learning to Program in Java course ... and I have taken advantage of the small group size to write a co-herent series of new examples ...	2009-09-24
2114	Which Version of Java am I running? Write a test program to use the getProperty method on System: public class Sample { public static void main (String [] args) { System.out.println("* Hello Melksham *"); System.out.println(System.getProperty("java.vm.vendor").toString()); System.out.println(System.getProperty("java.version").toString()); } } Compile ...	2009-04-02
2091	C, C++ and C# ... Java and JavaScript With all the words in the world, and the ability to make more up, isn't it astonishing that we have in our business some confusingly similar names for programming languages! C v C++ v C# C is the bedrock language that's used to write all the modern operating systems, device drivers, other languages, ...	2009-03-20
2087	Comparing Java Courses - what can we do? In answer to the question "Graham - what options can you offer me for a course similar to [gave me URL of an advanced server side Java course run by another training company, but not scheduled until late summer]?" from a potential course booker. I replied ... The description you have referred me to ...	2009-03-18

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Examples from our training material

Adam.java	Hello World, and command line input
Aileen.java	Sorting an ArrayList
Bernie.java	static method (function) calls
Chloe.java	First use of variables and conditionals
Daniel.java	Integer Calculation
Edward.java	Shared code - load and run method from another class
Fred.java	Reading user input from keyboard
Glenda.java	loop, with break and continue
Hilary.java	Passing values in and out of a local method
Irene.java	Arrays - setup, fill, pass, process, length
Julie.java	Array of arrays (i.e. 2 dimensional array)
Keith.java	Using a class
Lenny.java	Static Methods, comparing objects
Margaret.java	String handling example
Niamh.java	loading a method from a class in a package
Orlando.java	Class within a package
Peter.java	underlying (base) class
Quentin.java	Calling in an extended class
Rolf.java	Extended class
Steve.java	A second extended class
Time.java	Base class for examples up to Lenny
Trevor.java	Polymorphism - an array of different objects
Ulrika.java	An array of objects
Viv.java	An ArrayList - an extendable array
WellHouseInput.java	Reading from the keyboard or a file
Wendy.java	Test program within a class
Xena.java	Example with and without exception handling
Yvonne.java	Directory listing, file i/o and formatting demo
Zoe.java	StringTokeniszer, ArrayList and Exception demonstration

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 http://www.training-notes.co.uk.

Topics covered in this module

What is Java?
What is Java used for?
What sort of language is Java?
Is Java the right language for me?

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,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. Also available is the Opentalk Forum for discussion of technical questions.