@echo off if "x%CLASSPATH%" == "x" goto nocpath set xxCLASSPATH=%CLASSPATH% set CLASSPATH=GL4JInstaller.jar;%CLASSPATH% java -Dhttp.proxyHost=192.168.0.1 -Dhttp.proxyPort=3128 GL4JInst set CLASSPATH=%xxCLASSPATH% goto finish :nocpath set CLASSPATH=GL4JInstaller.jar java -Dhttp.proxyHost=192.168.0.1 -Dhttp.proxyPort=3128 GL4JInst set CLASSPATH= :finish