本文介绍了Java初学者应了解的基本概念，包括Java编程语言的特点、Java虚拟机(JVM)的作用及Java平台的重要意义。此外，还提供了JDK下载地址，并简单说明了Java运行环境(JRE)与集成开发环境(IDE)的概念。
The book I learn is named Oreilly.Java.in.a.Nutshell.5th.Edition.Mar.2005
Sun’s motto:Write once,run anywhere.
It increates end users’ freedom to choose an operating system.
The most important parts:
1. The Java Programming Language
2. The Java Virtual Machine
3. The Java Platform
Now I do not try to make sure what it is,because I think that it would waste my time.Not the reason that it’s not important,but that I can understand little about the 3 parts from the book .However,I have no ability to explain them because I just begin to learn Java.And by english book…
And I have to admit that the first purpose I learn Jave is studying english…
There are something others about Jave:
The place we run the Jave programs is called JDK.We can download from http://java.sun.com
PS:JRE,Java Runtime Environment which enables you to run existing Java programs.
IDEs,integrated(lost?~) development environment.(I think they are not important for me now.)
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