The following code worked fine with Processing 1.0.9, but fails with an
error message message
in 1.1:

import javax.swing.*;
import javax.swing.plaf.FontUIResource;
UIManager.put("OptionPane.messageFont", new FontUIResource(
new Font("Verdana", Font.BOLD, 24) ) );
UIManager.put("TextField.font", new FontUIResource(
new Font("Verdana", Font.BOLD, 20) ) );

Here's the error message:

"The constructor FontUIResource(Font) is undefined."

add

import java.awt.Font;

to your sketch, and it'll work fine. from revisions.txt:

+ Changed how imports are handled in sketches. This may break some sketches
that use java.xxx packages that aren't covered in the Processing reference.