Cannot type Korean input on Java application on linux machine(cinnabar, redhat)

Install Cinnabar or Redhat3.0 and Select Korean locale.
Install java beta b55
Type Ctrl+Space for changing korean input locale on Java application(See attachment try to untar and run or lookup java files), but it doesn't show input method box and it shows only English charecters as typing results.
But it is working fine on Text Editer or command line.