Swing Components look,feel like other OS components

system default:
javax.swing.UIManager.setLookAndFeel(javax.swing.UIManager.getSystemLookAndFeelClassName());

windows:
javax.swing.UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");

motif:
javax.swing.UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");