diff -r fd16c54261b3 -r 06bc494ca11e langtools/test/tools/javac/Paths/SameJVM.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/Paths/SameJVM.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  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.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * Support routines to allow running `javac' or `jar' within the same JVM.
+ */
+
+import java.io.*;
+import java.net.*;
+import java.lang.reflect.*;
+
+class SameJVM {
+
+    private static ClassLoader toolsClassLoader() {
+        File javaHome   = new File(System.getProperty("java.home"));
+        File classesDir = new File(javaHome, "classes");
+        File libDir     = new File(javaHome.getParentFile(), "lib");
+        File toolsJar   = new File(libDir, "tools.jar");
+        try {
+            return new URLClassLoader(
+                new URL[] {classesDir.toURL(), toolsJar.toURL()});
+        } catch (MalformedURLException e) { throw new AssertionError(e); }
+    }
+    private static final ClassLoader cl = toolsClassLoader();
+
+    static void javac(String... args) throws Exception {
+        Class c = Class.forName("com.sun.tools.javac.Main", true, cl);
+        int status = (Integer)
+            c.getMethod("compile", new Class[] {String[].class})
+            .invoke(c.newInstance(), new Object[] {args});
+        if (status != 0)
+            throw new Exception("javac failed: status=" + status);
+    }
+
+    static void jar(String... args) throws Exception {
+        Class c = Class.forName("sun.tools.jar.Main", true, cl);
+        Object instance = c.getConstructor(
+            new Class[] {PrintStream.class, PrintStream.class, String.class})
+            .newInstance(System.out, System.err, "jar");
+        boolean result = (Boolean)
+            c.getMethod("run", new Class[] {String[].class})
+            .invoke(instance, new Object[] {args});
+        if (! result)
+            throw new Exception("jar failed");
+    }
+}