Index: python/core/PyJavaInstance.java
===================================================================
RCS file: /cvsroot/jython/jython/org/python/core/PyJavaInstance.java,v
retrieving revision 2.8
diff -u -r2.8 PyJavaInstance.java
--- python/core/PyJavaInstance.java	27 Nov 2001 13:51:37 -0000	2.8
+++ python/core/PyJavaInstance.java	7 Nov 2003 23:44:49 -0000
@@ -109,6 +109,10 @@
         if (!(o instanceof PyJavaInstance))
             return -2;
         PyJavaInstance i = (PyJavaInstance)o;
+        // use Comparable interface if possible
+        if (javaProxy instanceof Comparable) {
+          return ((Comparable)javaProxy).compareTo(i.javaProxy);
+        }
         if (javaProxy.equals(i.javaProxy))
             return 0;
         return -2;