### 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	3 Jun 2009 12:41:17 -0000
@@ -1162,6 +1162,10 @@
 					break;
 			}
 		}
+		
+		if (isForbiddenType(packageName, simpleTypeName)) {
+			return;
+		}
 
 		if(this.acceptedTypes == null) {
 			this.acceptedTypes = new ObjectVector();
@@ -3783,12 +3787,21 @@
 			}
 			TypeReference[] superInterfaces = typeDeclaration.superInterfaces;
 			int length = superInterfaces == null ? 0 : superInterfaces.length;
+			int astNodeIndex = -1;
 			for (int i = 0; i < length; i++) {
 				if(superInterfaces[i] == astNode) {
 					addForbiddenBindings(typeDeclaration.binding);
-					return scope.parent;
+					astNodeIndex = i;
+					break;
 				}
 			}
+			if (astNodeIndex >= 0) {
+				for (int i = 0; i < length; i++) {
+					if (i == astNodeIndex) continue;
+					addForbiddenBindings(superInterfaces[i].resolvedType);
+				}
+				return scope.parent;
+			}
 		} else {
 			if (astNodeParent != null && astNodeParent instanceof TryStatement) {
 				boolean isException = false;
@@ -10325,6 +10338,8 @@
 				checkCancel();
 				
 				SourceTypeBinding sourceType = types[i];
+				
+				if (isForbidden(sourceType)) continue;
 
 				char[] qualifiedSourceTypeName = CharOperation.concatWith(sourceType.compoundName, '.');
 
@@ -11673,6 +11688,26 @@
 		return false;
 	}
 
+	private boolean isForbiddenType(char[] givenPkgName, char[] givenTypeName) {
+		for (int i = 0; i <= this.forbbidenBindingsPtr; i++) {
+			if (this.forbbidenBindings[i] instanceof TypeBinding) {
+				TypeBinding typeBinding = (TypeBinding) this.forbbidenBindings[i];
+				char[] currPkgName = typeBinding.qualifiedPackageName();
+				if (CharOperation.equals(givenPkgName, currPkgName))	{
+					char[] currTypeName = typeBinding.shortReadableName();
+					int genericTypePos = CharOperation.indexOf('<', currTypeName);
+					if (genericTypePos >= 0) {
+						currTypeName = CharOperation.subarray(currTypeName, 0, genericTypePos);
+					}
+					if (CharOperation.equals(givenTypeName, currTypeName)) {
+						return true;
+					}
+				}
+			}
+		}
+		return false;
+	}
+
 	private boolean isIgnored(int kind) {
 		return this.requestor.isIgnored(kind);
 	}