exec_cmd.addTokenizedString( opt4jvm );
exec_cmd.addWholeString( "-jar" );
exec_cmd.addWholeString( jar_path );
launcher = new Launcher();
if ( ( exec_err_msg = launcher.exec( exec_cmd.toStringArray() ) )
!= null ) {
Dialogs.error( null, "The following process exits with error:\n"
+ exec_cmd.toString() + "\n" + exec_err_msg );
System.exit( 1 );
}