dreadnought4629

i just got the server pack and i chlick on the launch.bat and all it says is C:\Users\nicholas\Desktop\server>java -Xmx3G -Xms2G -jar Voltz.jar nogui 'java' is not recognized as an internal or external command, operable program or batch file. C:\Users\nicholas\Desktop\server>pause Press any key to continue . . . and i press a key and the window closes and does nothing more help?