--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/sample/nashorn/javahelp.js	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2015, 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.
+ */
+
+// script helpers to print meta info on Java instances and classes
+
+// print instance methods info on a Java object or static methods info of a Java class
+function methods(jobj) {
+    if (! Java.isJavaObject(jobj)) {
+        throw new TypeError("not a Java object");
+    }
+
+    var isStatic = Java.isType(jobj);
+    var obj = Object.bindProperties({}, jobj);
+    for each (var i in obj) {
+        if (Java.isJavaMethod(i)) {
+            var str = String(i);
+            var idx = str.indexOf(' ');
+            var overloaded = str.substring(0, idx).endsWith("OverloadedDynamicMethod");
+            var lastIdx = isStatic? str.lastIndexOf('] on') : str.lastIndexOf(']');
+            print(str.substring(idx + 1, lastIdx) + (overloaded? "*" : ""))
+        }
+    }
+}
+
+// print instance field names of a Java object or static field names of a Java class
+function fields(jobj) {
+    if (! Java.isJavaObject(jobj)) {
+        throw new TypeError("not a Java object");
+    }
+
+    var obj = Object.bindProperties({}, jobj);
+    for (var i in obj) {
+        if (! Java.isJavaMethod(obj[i])) {
+            print(i);
+        }
+    }
+}