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Environment Variables for Java

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JAVA_HOME
JDK_HOME
PATH
CLASSPATH


javac -d . HelloWorld.java
java com.live.xscript.demo.HelloWorld
java -verbose com.live.xscript.demo.HelloWorld


默认情况下(sun javac)
rt.jar
dt.jar
tools.jar
都不用放在CLASSPATH
系统默认就包含了

但用其他的编译器如jikes
CLASSPATH中就要包含rt.jar
JAVA_HOME=JDK_HOME
D:\Program Files\Java\jdk1.5.0

CLASSPATH
.;%JAVA_HOME%\jre\lib\rt.jar;D:\Program Files\Java\lib

PATH
%JAVA_HOME%\bin;

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