Hello. I believe that there is an error in the showMessageDialog examples on the page below:

http://download.oracle.com/docs/cd/E17409_01/javase/tutorial/uiswing/components/dialog.html

The following code fails to compile:

//default title and icon
JOptionPane.showMessageDialog(frame,
    "Eggs are not supposed to be green.",
    "Message");


According to the javadocs, JOptionPane.showMessageDialog accepts 2 or 4-5 parameters. The example above lists 3.