Java 学习最佳途径--工具篇(国外英文资料).doc

Java 学习最佳途径--工具篇(国外英文资料) Doc document may at the WAP end of the browsing experience poor. Suggest you select TXT, or download the source file to the machine view. The best way to learn Java the best way to learn tools - tools article A, JDK (Java Development Kit) JDK is the core of the Java, including the Java runtime environment (Java Runtime Envirnment), a bunch of Java tools and Java base class library (rt.jar). No matter what the essence of the Java application server is a built-in version of the JDK. The master JDK is the first step to learn Java. JDK is the most mainstream Sun company released JDK, in addition to Sun, there are many companies and organizations have developed their own JDK, such as IBM JDK company, BEA company Jrocket, also developed by GNU JDK and so on. The IBM JDK contains JVM (Java Virtual Machine) operating efficiency than the Sun JDK JVM contains much higher. To run on the X86 platform Jrocket in the server operating efficiency is much better than the Sun JDK. But anyway, we still need to master Sun JDK. 1, JDK to download and install JDK also called J2SE (Java2 SDK Standard Edition), can /j2se/downloads.html from the Java web site to download the Sun, JDK, the latest version is J2SDK1.4.2, it is recommended to download this version of the JDK download page here: /j2se/1.4.2/download.html. Download JDK is an executable installer, the default installation will install a JRE in the C:\Program Files\Java\ directory (for the browser to use), the installation of a JDK in C:\j2sdk1.4.2 (including a JRE). Then we need to increase the C:\j2sdk1.4.2\bin Java path in the front of the PATH environment variable. This JDK is installed well. 2, the JDK command is the most important tool JDK command-line tool: Java: JVM class javac:Java jar:Java compiler implementation start packing tool javadoc:Java generator the command line must be very familiar with, for each parameter to be proficient. For these commands the study, detailed documentation on JDK Doc