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diff --git a/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/filters/ClosedProjectFilter.java b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/filters/ClosedProjectFilter.java
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index 00000000..391d9de1
--- /dev/null
+++ b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/filters/ClosedProjectFilter.java
@@ -0,0 +1,37 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.internal.ui.filters;
+
+
+import org.eclipse.core.resources.IResource;
+
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.jface.viewers.ViewerFilter;
+
+import org.eclipse.jdt.core.IJavaElement;
+
+/**
+ * Filters closed projects
+ */
+public class ClosedProjectFilter extends ViewerFilter {
+
+	/*
+	 * @see ViewerFilter
+	 */
+	@Override
+	public boolean select(Viewer viewer, Object parent, Object element) {
+		if (element instanceof IJavaElement)
+			return ((IJavaElement)element).getJavaProject().getProject().isOpen();
+		if (element instanceof IResource)
+			return ((IResource)element).getProject().isOpen();
+		return true;
+	}
+}