Java - Extending Classes and More

Java module J710

Extending Classes and More

Exercises, examples and other material relating to training module J710. This topic is presented on public courses Learning to Program in Java, Java Bootcamp, Java Programming for the Web

Learning to Program in Java - training course - Writing Java programs for newcomers to programming.

Learning to Program in Java - Writing Java programs for newcomers to programming. This course introduces you to programming in the Java programming language. ...

http://www.wellho.net/course/sjfull.html [course]

Java Bootcamp - training course - An intense course on Java programming, Servlets and JSPs

Java Bootcamp - An intense course on Java programming, Servlets and JSPs This course introduces you to the Java programming language, and its Internet ...

http://www.wellho.net/course/bjfull.html [course]

Java Programming for the Web - training course - Learn to write server- or client-side applications in Java.

Java Programming for the Web - Learn to write server- or client-side applications in Java. This course introduces you to the Java programming language, ...

http://www.wellho.net/course/jpfull.html [course]

Calling base class constructors

In all object oriented languages, you have a facility called inheritance where you can define one type of thing ("class of object") based on another, ...

http://www.wellho.net/mouth/1819_Cal ... ctors.html [short article]

Java - using super to call a method in the parent class

If you're writing a Java class in which you override a method from the base class, can you still make use of that base class method in your new code? ...

http://www.wellho.net/mouth/1501_Jav ... class.html [short article]

Final, Finally and Finalize - three special words in Java

A final method or variable is one that can't be overridden - you can define a method as final within a class to ensure that any extensions to the class ...

http://www.wellho.net/mouth/1066_Fin ... -Java.html [short article]

What are factory and singleton classes?

Do you find some of the OO terminolgy baffling? Once you've learnt about constructors and methods, inheritance, overloading and polymorphism and statics, ...

http://www.wellho.net/mouth/1217_Wha ... sses-.html [short article]

Learn how to implement inheritance in Java, and how Java handles Polymorphism. Java also provides the concepts of abstract classes and interfaces, which are also covered by this module.

This topic is presented on public courses Learning to Program in Java, Java Bootcamp, Java Programming for the Web

Examples from our training material

Babysitter.java	Application that uses Hire, Cinema and TV films
BaseFile.java	An abstract base class
Book.java	Inheriting from the Universal Superclass. Also test harness in same file as class.
Car.java	Class that implements an interface
Cinema.java	extended class example
Hire.java	Hire Film - extended class
HireFilm.java	Class HireFilm (extends film from other module)
Hires.java	Application to use HireFilm
House.java	Another class than implements an interface
Ipay.java	Application using an array of objects that implement an interface
Lecture.java	Lecture - application for exercise
Lecturer.java	Lecturer - subclass for use in exercise
People.java	People - base class for use in exercise
Round.java	Exercise template - calculate price of a round
Student.java	second subclass for use in exercise
Tv.java	Another extended class - TV
insurable.java	Interface definition

Pictures

Students learning Java on a private course

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

Extended classes.
Encapsulation.
Alternative exercise.
Abstract Classes.
Getting your design right.
The universal superclass.
Interfaces.
The final modifier.

Complete learning

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