tux@tux:~/Desktop/jedit$ java -jar jedit42install.jar
Exception in thread "main" java.awt.AWTError: Cannot load AWT toolkit: gnu.java.awt.peer.gtk.GtkToolkit
   at java.awt.Toolkit.getDefaultToolkit(libgcj.so.7)
   at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(libgcj.so.7)
   at java.awt.Window.<init>(libgcj.so.7)
   at java.awt.Frame.<init>(libgcj.so.7)
   at javax.swing.JFrame.<init>(libgcj.so.7)
   at installer.SwingInstall.<init>(SwingInstall.java:30)
   at installer.Install.main(Install.java:35)
Caused by: java.lang.ClassNotFoundException: gnu.java.awt.peer.gtk.GtkToolkit
   at java.lang.Class.forName(libgcj.so.7)
   at java.lang.Class.forName(libgcj.so.7)
   at java.awt.Toolkit.getDefaultToolkit(libgcj.so.7)
   ...6 more