PDF《100% Pure Java™》

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2 100% Pure Java Cookbook Introduction advice for maximizing portability of programs, and offers workarounds for the most common portability pitfalls encountered when writing software. This document can help you: ? Gain purity expertise: developers can benefit from the collective experience of Sun'

s development team. This guide contains information and ideas to help developers achieve the maximum portability with their programs. This guide describes the principles for purity, along with hints for portability. Contents This guide has two purposes: it sets out the rules for achieving the 100% Pure Java standard, and it presents advice and examples to aid the development of fully portable software. It defines the steps you must take to certify a program. It also defines what criteria applies to 100% Pure Java programs and, equally important, what does not. Chapter 1, Introduction gives basic definitions that describe the vocabulary of purity. This chapter is important for everyone. Chapter 2, Understanding Portability &

Purity describes the virtues of purity. The 100% Pure Java standard is not designed for all programs;

this chapter will help determine if following the purity standard is appropriate for you. Chapter 3, Guidelines for Developing Pure Programs describes the rules and guidelines that a programmer must know in order to develop a 100% Pure Java program. Chapter 4, Explanations of Purity Problems and Variances describes the pitfalls that programmers frequently encounter while trying to modify their programs for purity. This chapter will give Sun'

s perscribed solutions to these pitfalls. Some pitfalls will require bending purity rules to some degree. The Appendices also give helpful information describing: Appendix A, Available Java Platforms describes the supported architectures, OS types, JAE versions that a pure java program should run on. Revision Date: 10/00

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3 About this Guide Appendix B, Frequently Asked Questions for Purity describes common questions that people have relating to the rules of purity, how to in........