Setting the Look and Feel
To change the look and feel, you need to know the class name of the new look and feel. This example changes it to the Windows look and feel. 

 
 try {
     // The next three lines should all be in one line.
     UIManager.setLookAndFeel(
       "com.sun.java.swing.plaf.windows.
         WindowsLookAndFeel");
 } catch (InstantiationException e) {
 } catch (ClassNotFoundException e) {
 } catch (UnsupportedLookAndFeelException e) {
 } catch (IllegalAccessException e) {
 }