--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/lambdaShapes/org/openjdk/tests/separate/DirectedClassLoader.java	Tue Nov 20 09:58:55 2012 -0800
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package org.openjdk.tests.separate;
+
+import java.util.HashMap;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+
+class DirectedClassLoader extends ClassLoader {
+
+    private HashMap<String,File> loadLocations;
+    private File defaultLocation;
+    private ClassFilePreprocessor[] preprocessors;
+
+    public DirectedClassLoader(
+            HashMap<String,File> locations, File fallback,
+            ClassFilePreprocessor ... preprocessors) {
+        loadLocations = new HashMap<>(locations);
+        defaultLocation = fallback;
+        this.preprocessors = preprocessors;
+    }
+
+    public DirectedClassLoader(
+            File fallback, ClassFilePreprocessor ... preprocessors) {
+        loadLocations = new HashMap<>();
+        defaultLocation = fallback;
+        this.preprocessors = preprocessors;
+    }
+
+    public DirectedClassLoader(ClassFilePreprocessor ... preprocessors) {
+        this((File)null, preprocessors);
+    }
+
+    public void setDefaultLocation(File dir) { this.defaultLocation = dir; }
+    public void setLocationFor(String name, File dir) {
+        loadLocations.put(name, dir);
+    }
+
+    @Override
+    protected Class<?> findClass(String name) {
+        String path = name.replace(".", File.separator) + ".class";
+
+        File location = loadLocations.get(name);
+        if (location == null || !(new File(location, path)).exists()) {
+            File def = new File(defaultLocation, path);
+            if (def.exists()) {
+                return defineFrom(name, new File(location, path));
+            }
+        } else {
+            return defineFrom(name, new File(location, path));
+        }
+        return null;
+    }
+
+    private Class<?> defineFrom(String name, File file) {
+        FileInputStream fis = null;
+        try {
+            try {
+                fis = new FileInputStream(file);
+                byte[] bytes = new byte[fis.available()];
+                int read = fis.read(bytes);
+                if (read != bytes.length) {
+                    return null;
+                }
+                if (preprocessors != null) {
+                    for (ClassFilePreprocessor cfp : preprocessors) {
+                        bytes = cfp.preprocess(name, bytes);
+                    }
+                 }
+                return defineClass(name, bytes, 0, bytes.length);
+            } finally {
+                fis.close();
+            }
+        } catch (IOException e) {}
+        return null;
+    }
+}