引用
wmic ENVIRONMENT create name="JAVA_HOME",username="<system>",VariableValue="D:\Java\jdk1.5.0_04"
wmic ENVIRONMENT where "name='PATH' and username='<system>'" set VariableValue="%PATH%;%%JAVA_HOME%%\bin"
wmic ENVIRONMENT create name="CLASSPATH",username="<system>",VariableValue=".;%%JAVA_HOME%%\lib\tools.jar;%%JAVA_HOME%%\lib\dt.jar;"
wmic ENVIRONMENT where "name='PATH' and username='<system>'" set VariableValue="%PATH%;%%JAVA_HOME%%\bin"
wmic ENVIRONMENT create name="CLASSPATH",username="<system>",VariableValue=".;%%JAVA_HOME%%\lib\tools.jar;%%JAVA_HOME%%\lib\dt.jar;"