And a strange exception at that... This is the code:

	try{
        	final JTree tree = new JTree(super_root);
        	tree.getSelectionModel().setSelectionMode
                	(TreeSelectionModel.SINGLE_TREE_SELECTION);
	} catch(Exception e) {
            System.err.println("Exception at start");
            System.err.println(e.getMessage());
	}

The code fails to print the name (e.getMessage() returns "null"):

[zaitcev@lembas gtest1]$ gcj -C gtest1.java
[zaitcev@lembas gtest1]$ gcj -C Device.java
[zaitcev@lembas gtest1]$ /usr/java/jdk1.5.0_01/bin/java gtest1
# (the above works just fine - posts empty window)
[zaitcev@lembas gtest1]$ gij gtest1
Exception at start
null

Versions:

gcc-java               4.0.0-4
java-1.4.2-gcj-compat  1.4.2.0-40jpp_14rh