### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: codeassist/org/eclipse/jdt/internal/codeassist/CompletionEngine.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/codeassist/org/eclipse/jdt/internal/codeassist/CompletionEngine.java,v
retrieving revision 1.397
diff -u -r1.397 CompletionEngine.java
--- codeassist/org/eclipse/jdt/internal/codeassist/CompletionEngine.java	20 May 2009 15:25:54 -0000	1.397
+++ codeassist/org/eclipse/jdt/internal/codeassist/CompletionEngine.java	1 Jun 2009 11:42:40 -0000
@@ -10325,6 +10325,10 @@
 				checkCancel();
 				
 				SourceTypeBinding sourceType = types[i];
+				
+				if (isForbidden(sourceType)) continue;
+				if (this.assistNodeIsClass && sourceType.isInterface()) continue;
+				if (this.assistNodeIsInterface && sourceType.isClass()) continue;
 
 				char[] qualifiedSourceTypeName = CharOperation.concatWith(sourceType.compoundName, '.');