Batch script to change Java Home between different JDKs

I recently happened to be working on multiple releases with some of them requiring the code to be compiled with JDK 6 whereas the more recent releases requiring code to compile with JDK 7. So i wrote up the following batch script to make the job of switching between the 2 JDKs easier. Before i run my ant build script i run the below script to set to ‘7’ for JDK 7 or ‘6’ for JDK 6.

@ECHO OFF

echo %1%

if "%1"== "" ( 

    echo "Syntax: javahome 7 or 6" 

    Goto :end

) 

if "%1" == "7" (

    echo "Setting JDK 7"

    set JAVA_HOME=C:\Program Files\Java\jdk1.7.0_01

    GOTO :printver

) 

if "%1" == "6" (

    echo "Setting JDK 6"

    set JAVA_HOME=C:\Program Files\Java\jdk1.6.0_23

    GOTO :printver

)

:printver

echo %JAVA_HOME%

set NEW_PATH=%PATH%

FOR /F "delims=;" %%P IN ("%PATH%") DO (

    @ECHO path = %%~P

)

set PATH=%JAVA_HOME%\bin;%NEW_PATH%

echo %PATH%

java -version

:end