Graphical User Interfaces - Java - page 596

Figure 14-15. Look and feel switcher under Mac OS X

Example 14-10 shows the code that implements the look and feel switcher. It's pretty
straightforward based on what we've seen already. The only neat trick is that I've set the se-
lected button back to what it was if the look and feel that the user selects is not available.

Example 14-10. LNFSwitcher.java
public

public class LNFSwitcher {

/** The frame. */
protected

class LNFSwitcher

protected JFrame theFrame ;
/** Its content pane */
protected protected Container cp ;

/** Start with the Java look-and-feel, if possible */
final

final static static String PREFERREDLOOKANDFEELNAME =

"javax.swing.plaf.metal.MetalLookAndFeel" ;
protected protected String curLF = PREFERREDLOOKANDFEELNAME ;

protected protected JRadioButton previousButton ;

/** Construct a program... */
public

public LNFSwitcher () {
super super ();

theFrame = new new JFrame ( "LNF Switcher" );

theFrame . setDefaultCloseOperation ( JFrame . EXIT_ON_CLOSE );
cp = theFrame . getContentPane ();
cp . setLayout ( new new FlowLayout ());

ButtonGroup bg = new new ButtonGroup ();