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Java module J715
Putting the Java Language Together
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 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 subjectupdated
4430The 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
 
4326Learning 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
 
2735Type 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
 
1181Good 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
 
836Build 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
 
Examples from our training material
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
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
Specification of requirement.
Design using abstract base class, extended to subclasses.
Place.java (base class), Area.java and District.java (extended classes).
Developing and testing.
Using these classes in multiple applications such as MultiFinder.java
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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