@ECHO OFF

SET /p $1="Enter Java 6 update  you want to use (13 or 20)" %=%

ECHO:%$1%

IF "%$1%"=="" (
    ECHO:Syntax: 6.13 or 6.20
	ECHO:Wrong syntax used. Exiting.
	PAUSE
    GOTO :end
)

IF "%$1%"=="6.13" (
    ECHO:Setting JDK 6.13
    SET JAVA_HOME="C:\Program Files\JavaTest\jre6"
	PAUSE
    GOTO :printver
)

IF "%$1%"=="6.20" (
    ECHO:Setting JDK 6.20
    SET JAVA_HOME="C:\Program Files\Java\jdk1.6.0_20"
	PAUSE
    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
PAUSE
:end