Compatibility issue in Java Swing application developed in Windows 7 with Ubuntu Linux

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http://stackoverflow.com – I have developed a simple Java Swing database application using NetBeans IDE in Windows 7 platform... It is perfectly working in the following test conditions : Windows 7 Running in Netbeans Windows 7 Running in Eclipse Wndows 7 Running in JAR format(both from Netbeans & Eclipse) Ubuntu Linux Running in Netbeans Ubuntu Linux Failed in Eclipse Ubuntu Linux Failed in JAR format(both from Netbeans & Eclipse) The failed condition is only for a JFrame and I checked all possible solution for this,,, This is the JFrame displayed in WINDOWS 7 successfull condition The failed frame is i (HowTos)