Can't open xmagelauncer with Java?

It will only open it with winrar, i have tried to open it with java but nothing happens.
i have even tried uninstalling both java and winrar then installing java again, but nothing works.
does anyone have a clue about what to do?
i have even tried uninstalling both java and winrar then installing java again, but nothing works.
does anyone have a clue about what to do?