Way to silence javax.swing messages in console?

[josephwb]

This may be naive, but I cannot figure out a way to silence the following messages:

$ java -jar figtree.jar
javax.swing.UIManager$LookAndFeelInfo[Metal javax.swing.plaf.metal.MetalLookAndFeel]
javax.swing.UIManager$LookAndFeelInfo[Nimbus javax.swing.plaf.nimbus.NimbusLookAndFeel]
javax.swing.UIManager$LookAndFeelInfo[CDE/Motif com.sun.java.swing.plaf.motif.MotifLookAndFeel]
javax.swing.UIManager$LookAndFeelInfo[GTK+ com.sun.java.swing.plaf.gtk.GTKLookAndFeel]

We get this on various flavours of linux (Debian, Ubuntu, etc.).