// Get the currently installed look and feel
    LookAndFeel lf = UIManager.getLookAndFeel();
    
    // Install a different look and feel; specifically, the Windows look and feel
    try {
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    } catch (InstantiationException e) {
    } catch (ClassNotFoundException e) {
    } catch (UnsupportedLookAndFeelException e) {
    } catch (IllegalAccessException e) {
    }