jdk

http://www.oracle.com/technetwork/java/javase/downloads/index-jdk5-jsp-142662.html

http://www.java.net/download/jdk6/6u10/promoted/b32/binaries/jdk-6u10-rc2-bin-b32-windows-i586-p-12_sep_2008.exe

都是新建系统变量
变量名:JAVA_HOME  变量值:C:\Program Files\Java\jdk1.5.0_16
变量名: Path :  .;\%JAVA_HOME%\bin;
变量名: CLASSPATH  变量值:  .;%JAVA_HOME%\lib

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