Titlebook: Java for Practitioners; An Introduction and John Hunt Textbook 1999 Springer-Verlag London Limited 1999 Action.Applets.C programming langu

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978-1-85233-093-4Springer-Verlag London Limited 1999

Pathogen

Immunoglobulin

Basic JavaIn the last two chapters, you learned a little about the history of Java and the Java development environment. In this chapter, you will encounter the Java language, the compiler, the debugger, the Java Virtual Machine and the . utility.

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Java Building BlocksThis chapter presents an introduction to the Java programming language. As such, it is not intended to be a comprehensive guide. It introduces the basic elements of the Java language, discusses the concept of classes and instances and how they are defined, presents methods and method definitions, and considers interface specifications.

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apropos

The , ClassYou should now be ready to write some Java code, so this chapter takes you through a worked example. It is a very simple example, in which you create a new class, define some instance variables and write a couple of methods.

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Encapsulation and PolymorphismThis chapter discusses the encapsulation and polymorphic features of Java. It illustrates how the encapsulation facilities can allow quite fine-grained control over the visibility of elements of your programs. The concept of packages is also discussed, along with some concrete examples. The polymorphic nature of Java concludes the chapter.

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Graphic Programming Using the Abstract Window ToolkitThis chapter describes how to create graphical displays using the standard JDK windowing and graphical classes. It does not cover the construction of graphical user interfaces, which are discussed in the next chapter.

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