--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/sjavac/Wrapper.java	Mon Jul 14 11:46:31 2014 -0700
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+
+import java.io.File;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+
+
+public class Wrapper {
+    public static void main(String... args) throws Exception {
+        if (!isSJavacOnClassPath()) {
+            System.out.println("sjavac not available: pass by default");
+            return;
+        }
+
+        String testClassName = args[0];
+        String[] testArgs = Arrays.copyOfRange(args, 1, args.length);
+
+        File srcDir = new File(System.getProperty("test.src"));
+        File clsDir = new File(System.getProperty("test.classes"));
+
+        File src = new File(srcDir, testClassName + ".java");
+        File cls = new File(clsDir, testClassName + ".class");
+
+        if (cls.lastModified() < src.lastModified()) {
+            System.err.println("Recompiling test class...");
+            String[] javacArgs = { "-d", clsDir.getPath(), src.getPath() };
+            int rc = com.sun.tools.javac.Main.compile(javacArgs);
+            if (rc != 0)
+                throw new Exception("compilation failed");
+        }
+
+        Class<?> sjavac = Class.forName(testClassName);
+        Method main = sjavac.getMethod("main", String[].class);
+        main.invoke(null, new Object[] { testArgs });
+    }
+
+    private static boolean isSJavacOnClassPath() {
+        String cls = "com/sun/tools/sjavac/Main.class";
+        return Wrapper.class.getClassLoader().getResource(cls) != null;
+    }
+}