bat

@echo on
echo Setting JAVA_HOME
set JAVA_HOME=D:dev	oolsJavajdk1.7.0_07
echo setting PATH
set PATH=%JAVA_HOME%in;%PATH%
wmic ENVIRONMENT where "name='JAVA_HOME'" delete
wmic ENVIRONMENT create name="JAVA_HOME",username="<system>",VariableValue="%JAVA_HOME%"
echo Display java version
java -version
pause