diff -r 2e3bd98c5664 -r bda887c0088a nashorn/samples/disassemble.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/disassemble.js	Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 
+ *   - Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 
+ *   - Neither the name of Oracle nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Usage: jjs disassemble.js -- <.class-file-path>
+
+// Simple .class disassembler that uses bundled ObjectWeb ASM
+// classes in jdk8. WARNING: Bundled ObjectWeb ASM classes are
+// not part of official jdk8 API. It can be changed/removed 
+// without notice. So, this script is brittle by design!
+
+// This example demonstrates passing arguments to script
+// from jjs command line, nio and ASM usage.
+
+// classes used
+var FileSystems = Java.type("java.nio.file.FileSystems");
+var Files = Java.type("java.nio.file.Files");
+var System = Java.type("java.lang.System");
+var PrintWriter = Java.type("java.io.PrintWriter");
+
+// WARNING: uses non-API classes of jdk8!
+var ClassReader = Java.type("jdk.internal.org.objectweb.asm.ClassReader");
+var TraceClassVisitor = Java.type("jdk.internal.org.objectweb.asm.util.TraceClassVisitor");
+
+// convert file name to Path instance
+function path(file) {
+    return FileSystems.default.getPath(file);
+}
+
+// read all file content as a byte[]
+function readAllBytes(file) {
+    return Files.readAllBytes(path(file));
+}
+
+// disassemble .class byte[] and prints output to stdout
+function disassemble(bytecode) {
+    var pw = new PrintWriter(System.out);
+    new ClassReader(bytecode).accept(new TraceClassVisitor(pw), 0);
+}
+
+// check for command line arg (for .class file name)
+if (arguments.length == 0 || !arguments[0].endsWith('.class')) {
+    print("Usage: jjs disassemble -- <.class file>");
+    exit(1);
+}
+
+// disassemble the given .class file
+disassemble(readAllBytes(arguments[0]));