Exercises, examples and other material relating to training module J715. This module is presented on Private Courses and Specially Run Courses only

You've learnt the fundamentals of Java Ð the language itself, the structure of classes and packages, and also the use of the utility classes in java.util. Now it's time to put all the fundamental elements together in a complete example. This module is written as an exercise, with a completed sample answer.

Articles and tips on this subject		updated
4430	The spirit of Java - delegating to classes Building up towards the end of a Java course, I've been very much teaching the spirit of Java where code is delegated to classes and leaves the main application as a few short method calls, making it readable in its own right, and allowing code that uses the same data type to be shared between programs. ...	2015-02-19
4326	Learning to program - comments, documentation and test code Updates material from our courses for newcomers to programming ... we're very happy to help newcomers learn about the basic principles of programming, running an extra day for a very small group on the front of our regular courses for delegates who have programmed before, but in different languages. In ...	2014-11-22
2735	Type checking, Java arrays and collections Java's arrays are "typed" - you declare them to contain a particular type of primitive, or a particular type of object (which also enables them to contain any object type which is extended from that declared type). But, when you go beyond arrays and use the more flexible utility classes such as ArrayLists, ...	2010-04-23
1181	Good Programming practise - where to initialise variables It's a good idea to initialise your variables directly before you use them for the first time if you're going to use them as accumulators. By accumulator I mean that you're going to write assignments such as:   $n += 4; # Perl   incr notepad; # Tcl   lappend flcodes [lindex ...	2007-05-11
836	Build on what you already have with OO If I start recalling a "Goons" sketch, then I'll show my age .... but never mind. It was a RERUN that I saw ;-) Spike Milligan is counting votes at an election. "Two thousand, six hundred and forty two". "Two thousand, six hundred and forty three". "Two thousand, six hundred and forty four" ... "Would ...	2006-08-18

Area.java	defintion of an area of the UK
District.java	definition of a district of the UK
MF.java	Final example application
Multifinder.java	Full application
P3.java	Example object
P4.java	Object P4 definition
PF1.java	Sample extended class
PF2.java	Second example application
PF3.java	Third example application
PF4.java	Final lookup on data example, ignoring area v district distinction
Person.java	Calculating BMI of various stars
Place.java	Solution - base class (abstract)
Placefinde.java	Solution - application class
Station.java	Class of objects from file or URL, factory, Vector and HashMap, select, sort, output