# HG changeset patch
# User sundar
# Date 1441366866 -19800
# Node ID bfe6bd5d57bfaa3e9134588311707ed7ddf007af
# Parent  42d8ed4651b62572b39e6fed3fafcb7ee93f9dc2
8135054: Add more samples to nashorn samples directory
Reviewed-by: mhaupt, hannesw

diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/EvalWithArbitraryThis.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/EvalWithArbitraryThis.java	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+
+import javax.script.*;
+import jdk.nashorn.api.scripting.*;
+
+// Simple nashorn demo that evals a script with arbitrary script
+// object bound as "this" for the evaluated script.
+
+public class EvalWithArbitraryThis {
+    public static void main(String[] args) throws Exception {
+        ScriptEngineManager m = new ScriptEngineManager();
+        ScriptEngine e = m.getEngineByName("nashorn");
+        Object sobj = e.eval("( { foo: 343, bar: 'hello' } )");
+
+        // "this" bound to sobj in this eval.
+        // so it prints sobj.foo and sobj.bar.
+        ((ScriptObjectMirror)sobj).eval("print(this.foo); print(this.bar)");
+    }
+}
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/EvalWithArbitraryThis.java.orig
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/EvalWithArbitraryThis.java.orig	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+
+import javax.script.*;
+import jdk.nashorn.api.scripting.*;
+
+// Simple nashorn demo that evals a script with arbitrary script
+// object bound as "this" for the evaluated script.
+
+public class EvalWithArbitraryThis {
+    public static void main(String[] args) throws Exception {
+        ScriptEngineManager m = new ScriptEngineManager();
+        ScriptEngine e = m.getEngineByName("nashorn");
+        Object sobj = e.eval("( { foo: 343, bar: 'hello' } )");
+
+        // "this" bound to sobj in this eval.
+        // so it prints sobj.foo and sobj.bar.
+        ((ScriptObjectMirror)sobj).eval("print(this.foo); print(this.bar)");
+    }
+}
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/LambdaAsFunc.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/LambdaAsFunc.java	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+
+import javax.script.*;
+import java.util.function.*;
+
+// example demonstrating that arbitrary Lambda can be called as function from script
+
+public class LambdaAsFunc {
+    public static void main(String[] args) throws Exception {
+        ScriptEngineManager m = new ScriptEngineManager();
+        ScriptEngine e = m.getEngineByName("nashorn");
+
+        // expose a lambda as top-level script function
+        e.put("upper", (Function<String, String>) String::toUpperCase);
+
+        // call lambda as though it is a normal script function
+        System.out.println(e.eval("upper('hello')"));
+    }
+}
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/Main.asm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/Main.asm	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,103 @@
+/*
+ * 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.
+ */
+
+// Simple sample to demonstrate openjdk asmtools assembler with
+// nashorn dynalink linker in a invokedynamic instruction.
+//
+// To assemble this file, use the following command:
+//
+//    java -cp <asmtools.jar> org.openjdk.asmtools.Main jasm Main.asm
+//
+// See also: https://wiki.openjdk.java.net/display/CodeTools/asmtools
+//
+// NOTE: Uses nashorn internals and so *may* break with later nashorn!
+
+super public class Main
+	version 52:0
+{
+
+
+public Method "<init>":"()V"
+	stack 1 locals 1
+{
+		aload_0;
+		invokespecial	Method java/lang/Object."<init>":"()V";
+		return;
+}
+
+public static Method main:"([Ljava/lang/String;)V"
+	stack 2 locals 2
+{
+                // List l = new ArrayList();
+		new	class java/util/ArrayList;
+		dup;
+		invokespecial	Method java/util/ArrayList."<init>":"()V";
+		astore_1;
+		aload_1;
+
+                // l.add("hello");
+		ldc	String "hello";
+		invokeinterface	InterfaceMethod java/util/List.add:"(Ljava/lang/Object;)Z",  2;
+		pop;
+
+                // l.add("world");
+		aload_1;
+		ldc	String "world";
+		invokeinterface	InterfaceMethod java/util/List.add:"(Ljava/lang/Object;)Z",  2;
+		pop;
+
+                // printLength(l);
+		aload_1;
+		invokestatic	Method printLength:"(Ljava/lang/Object;)V";
+
+                // printLength(args); // args is argument of main method
+		aload_0;
+		invokestatic	Method printLength:"(Ljava/lang/Object;)V";
+		return;
+}
+
+private static Method printLength:"(Ljava/lang/Object;)V"
+	stack 2 locals 1
+{
+		getstatic	Field java/lang/System.out:"Ljava/io/PrintStream;";
+		aload_0;
+
+                // Using nashorn embedded dynalink linker with the following invokedynamic
+                // 'length' property on a bean - arrays, lists supported
+
+                invokedynamic   InvokeDynamic REF_invokeStatic:jdk/nashorn/internal/runtime/linker/Bootstrap.bootstrap:"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;I)Ljava/lang/invoke/CallSite;":"dyn:getProp|getElem|getMethod:length":"(Ljava/lang/Object;)Ljava/lang/Object;" int 0;
+
+                // print 'length' value
+		invokevirtual	Method java/io/PrintStream.println:"(Ljava/lang/Object;)V";
+		return;
+}
+
+} // end Class Main
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/Main.class
Binary file samples/Main.class has changed
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/PrintToString.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/PrintToString.java	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,47 @@
+/*
+ * 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.
+ */
+
+import javax.script.*;
+import java.io.StringWriter;
+
+// simple example demonstrating capturing of "print" output
+// from script execution as a String via script engine API.
+
+public class PrintToString {
+  public static void main(String[] args) throws ScriptException {
+    ScriptEngineManager m = new ScriptEngineManager();
+    ScriptEngine e = m.getEngineByName("nashorn");
+    StringWriter sw = new StringWriter();
+    e.getContext().setWriter(sw);
+    e.eval("print('hello world')");
+    System.out.println(sw.toString());
+  }
+}
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/array_removeif.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/array_removeif.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,52 @@
+/*
+ * 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.
+ */
+
+// Sample for Collection.removeIf and Java.to
+// See http://docs.oracle.com/javase/8/docs/api/java/util/Collection.html#removeIf-java.util.function.Predicate-
+ 
+var langs = [
+    "java", "javascript",
+    "C", "C#", "C++",
+    "Erlang", "Haskell"
+];
+ 
+// convert script array to a Java List
+function asList(array) {
+    return Java.to(array, java.util.List);
+}
+ 
+// remove elements that satisfy a predicate
+// using Collection.removeIf(Predicate)
+asList(langs).removeIf(
+    function(s) s.startsWith("C"));
+ 
+// print modified array
+print(langs);
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/bind_on_java.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/bind_on_java.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+
+// sample to demonstrate calling Function.prototype.bind on Java methods.
+
+var DoubleStream = java.util.stream.DoubleStream;
+var r = new java.util.Random();
+
+// bind "this" for nextGaussian method of Random class
+var next = Function.bind.call(r.nextGaussian, r);
+
+// next is used as no argument "function"
+DoubleStream
+    .generate(function() next())
+    .limit(100)
+    .forEach(print);
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/call_bind_java.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/call_bind_java.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,59 @@
+/*
+ * 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.
+ */
+
+// Sample demonstrating calling Java methods like normal
+// functions. Bound instance methods, static methods can be
+// called like normal script functions.
+
+// Java types used
+var Files = Java.type("java.nio.file.Files");
+var FileSystems = Java.type("java.nio.file.FileSystems");
+var System = Java.type("java.lang.System");
+
+var fs = FileSystems.default;
+var bind = Function.prototype.bind;
+
+// Java methods as "functions"
+
+// Java method with bound "this"
+var Path = bind.call(fs.getPath, fs);
+// Java static method
+var Property = System.getProperty;
+
+// call Java static methods and bound instance methods
+// like normal script functions.
+
+var root = Path("/");
+// print URI for root dir
+print(root.toUri());
+var home = Path(Property("user.home"));
+// list home directory
+Files.walk(home).forEach(print);
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/check_nashorn.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/check_nashorn.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+// check if script is being run using nashorn script engine
+function isNashorn() {
+  try {
+    // "engine" variable is of type javax.script.ScriptEngine is defined
+    // by nashorn jsr-223 engine. Check the name of the engine from
+    // javax.script.ScriptEngineFactory associated
+    
+    return engine.factory.engineName.contains("Nashorn");
+  } catch (e) {
+    // if engine or any of the properties are undefined
+    // then script is not being run using nashorn.
+    return false;
+  }
+}
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/datetime.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/datetime.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,73 @@
+/*
+ * 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.
+ */
+
+// converting b/w JavaScript Date and Java LocalDateTime
+
+// JavaScript Date with current time
+var d = new Date();
+print(d);
+ 
+// Java 8 java.time classes used
+var Instant = java.time.Instant;
+var LocalDateTime = java.time.LocalDateTime;
+var ZoneId = java.time.ZoneId;
+ 
+// Date.prototype.getTime
+
+// getTime() method returns the numeric value corresponding to the time
+// for the specified date according to universal time. The value returned
+// by the getTime() method is the number of milliseconds since 1 January 1970 00:00:00 UTC.
+// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime
+ 
+// Java Instant.ofEpochMilli to convert time in milliseconds to Instant object
+// https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#ofEpochMilli-long-
+ 
+var instant = Instant.ofEpochMilli(d.getTime());
+ 
+// Instant to LocalDateTime using LocalDateTime.ofInstant
+// https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html#ofInstant-java.time.Instant-java.time.ZoneId-
+ 
+var ldt = LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
+print(ldt);
+ 
+// converting a LocalDateTime to JavaScript Date
+// convert LocalDateTime to Instant first
+// https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html#atZone-java.time.ZoneId-
+ 
+var instant = ldt.atZone(ZoneId.systemDefault()).toInstant();
+ 
+// instant to to epoch milliseconds
+// https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#toEpochMilli--
+// and then to JavaScript Date from time in milliseconds
+// https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Date
+
+var d1 = new Date(instant.toEpochMilli());
+print(d1); 
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/defaults.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/defaults.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ */
+
+// print default methods of a Java class
+
+if (arguments.length == 0) {
+   print("Usage: jjs defaults.js -- <java class name>");
+   exit(1);
+}
+
+var jclass = Java.type(arguments[0]).class;
+for each (m in jclass.methods) {
+    // http://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html#isDefault--
+    if (m.default) print(m);
+}
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/find_max_lines.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/find_max_lines.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,59 @@
+/*
+ * 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.
+ */
+
+// Find the file with maximum number of lines
+
+var Files = Java.type("java.nio.file.Files");
+var Integer = Java.type("java.lang.Integer");
+var Paths = Java.type("java.nio.file.Paths");
+
+var file = arguments.length == 0? "." : arguments[0];
+var ext = arguments.length > 1? arguments[1] : ".java";
+var path = Paths.get(file);
+
+// return number of lines in given Path (that represents a file)
+function lines(p) {
+    var strm = Files.lines(p);
+    try {
+        return strm.count();
+    } finally {
+        strm.close();
+    }
+}
+
+// walk files, map to file and lines, find the max    
+var obj = Files.find(path, Integer.MAX_VALUE, 
+    function(p, a) !p.toFile().isDirectory() && p.toString().endsWith(ext)).
+map(function(p) ({ path : p, lines: lines(p) })).
+max(function(x, y) x.lines - y.lines).get();
+
+// print path and lines of the max line file
+print(obj.path, obj.lines);
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/fixed_point.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/fixed_point.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,69 @@
+/*
+ * 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.
+ */
+
+// Simple sample demonstrating "fixed point" computation with Streams
+
+// See also https://mitpress.mit.edu/sicp/chapter1/node21.html#secprocgeneralmethods
+var Stream = Java.type("java.util.stream.Stream");
+
+// generic fixed point procedure
+function fixed_point(f, init_guess) {
+  var tolerance = 0.00001;
+  function close_enough(v1, v2) Math.abs(v1 - v2) < tolerance;
+ 
+  var prev; 
+  return Stream.iterate(init_guess, f)
+      .filter(function(x) {
+          try {
+              return prev == undefined? false : close_enough(prev, x);
+          } finally {
+              prev = x;
+          }
+      })
+      .findFirst()
+      .get();
+}
+
+// solution to x = cos(x)
+print(fixed_point(Math.cos, 1.0))
+
+// solution to x = sin(x) + cos(x)
+print(fixed_point(function(x) Math.sin(x) + Math.cos(x), 1.0));
+
+// square root by Newton's method
+// http://en.wikipedia.org/wiki/Newton's_method
+function sqrt(n)
+  fixed_point(function(x) (x + n/x) / 2, 2.0);
+
+print(sqrt(2))
+print(sqrt(3))
+
+
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/importstatic.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/importstatic.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,52 @@
+/*
+ * 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.
+ */
+
+// Java like "import static class_name.*" for nashorn
+
+function importStatic(clazz) {
+    // make sure the argument is a Java type
+    if (! Java.isType(clazz)) {
+        throw new TypeError(clazz + " is not a Java type");
+    }
+
+    // bind properties of clazz to an object
+    var obj = Object.bindProperties({}, clazz);
+
+    // copy properties to global to "import" those
+    for (var i in obj) {
+        this[i] = obj[i];
+    }
+}
+
+importStatic(java.time.Instant);
+print(now());
+print(ofEpochSecond(1));
+print(parse("2007-12-03T10:15:30.00Z"));
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/java_completion.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/java_completion.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,41 @@
+/*
+ * 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.
+ */
+
+// Simple sample demonstrating the use of JShell API with nashorn
+
+// display source code completion suggestions for a Java snippet using JShell's API
+// See http://openjdk.java.net/projects/kulla/
+
+var repl = Java.type("jdk.jshell.JShell").create()
+var analysis = repl.sourceCodeAnalysis()
+var code = "System."
+var suggestions = analysis.completionSuggestions(code, code.length, [0])
+suggestions.forEach(function(s) print(s.continuation))
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/jrtlist.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/jrtlist.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,37 @@
+/*
+ * 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.
+ */
+
+// list contents of "jrt" file system in Java 9
+
+with(new JavaImporter(java.nio.file, java.net)) {
+    var fs = FileSystems.getFileSystem(URI.create("jrt:/"))
+    Files.walk(fs.getPath("/")).forEach(print);
+}
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/mothers_day.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/mothers_day.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,56 @@
+# compute Mothers day of the given the year
+
+/*
+ * 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.
+ */
+
+// print "Mother's day" of the given year using Java Time API
+
+if (arguments.length == 0) {
+    print("Usage: jjs mothers_day.js -- year");
+    exit(1);
+}
+
+// java classes used
+var DayOfWeek = java.time.DayOfWeek;
+var LocalDate = java.time.LocalDate;
+var TemporalAdjusters = java.time.temporal.TemporalAdjusters;
+
+var year = parseInt(arguments[0]);
+
+// See: https://en.wikipedia.org/?title=Mother%27s_Day
+// We need second Sunday of May. Make April 30 of the given
+// year adjust and adjust to next Sunday from there twice. To adjust a Date
+// we use a common TemporalAdjuster provided in JDK8.
+// https://docs.oracle.com/javase/8/docs/api/java/time/temporal/TemporalAdjusters.html
+
+print(LocalDate.of(year, 4, 30).
+    with(TemporalAdjusters.next(DayOfWeek.SUNDAY)).
+    with(TemporalAdjusters.next(DayOfWeek.SUNDAY)));
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/passwordgen.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/passwordgen.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,49 @@
+/*
+ * 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.
+ */
+
+// Simple password generator using SecureRandom + stream API
+
+// accept optional password length from command line
+var len = arguments.length? parseInt(arguments[0]) : 8;
+
+// Java types used
+var Collectors = Java.type("java.util.stream.Collectors");
+var SecureRandom = Java.type("java.security.SecureRandom");
+
+// allowed password chars
+var chars =
+ "!@#$%ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+// generated and print password
+print(new SecureRandom().
+    ints(len, 0, chars.length).
+    mapToObj(function(i) chars[i]).
+    collect(Collectors.joining("")));
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/print_symlinks.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/print_symlinks.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,50 @@
+/*
+ * 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.
+ */
+
+// Print all symbolic links in user's home directory
+
+// JavaImporter and "with" to simulate "import" statements in Java.
+// See https://wiki.openjdk.java.net/display/Nashorn/Nashorn+extensions
+
+with (new JavaImporter(java.nio.file, java.lang)) {
+
+  var userDir = System.getProperty("user.dir")
+  var home = FileSystems.default.getPath(userDir);
+
+  // JS functions can be passed where Java lambdas are required.
+  // Also, using "Expression closure" extension here.
+  // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Expression_Closures
+
+  Files.walk(home).
+    filter(function(p) Files.isSymbolicLink(p)).
+    forEach(function(p)
+      print(p, '->', Files.readSymbolicLink(p)));
+}
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/sort_by_java8.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/sort_by_java8.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,59 @@
+/*
+ * 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.
+ */
+
+// Simple sorting with Java8 APIs
+
+// Separation key-extraction from key ordering
+
+// Simple demo for Comparator.comparing
+// http://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html#comparing-java.util.function.Function-
+
+// data to be sorted
+var cards = [
+   { name: "hello", email: "foo@hello.com" },
+   { name: "world", email: "bar@world.com" },
+   { name: "see", email: "see@dontsee.com" },
+];
+
+var Collections = java.util.Collections;
+var Comparator = java.util.Comparator;
+
+// sort records name in reverse order of names
+Collections.sort(cards,
+  Comparator.comparing(function(a) a.name).reversed());
+
+print(JSON.stringify(cards))
+
+// sort records by email
+Collections.sort(cards,
+  Comparator.comparing(function(a) a.email));
+
+print(JSON.stringify(cards))
diff -r 42d8ed4651b6 -r bfe6bd5d57bf samples/this_for_eval.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/this_for_eval.js	Fri Sep 04 17:11:06 2015 +0530
@@ -0,0 +1,54 @@
+/*
+ * 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.
+ */
+
+// how to pass arbitrary "this" object for eval'ed script?
+
+var obj = { foo: 44 };
+
+// the following won't work. eval.apply is indirect eval call
+// and so 'this' will be global object always! So, this
+// line will print 'undefined'
+eval.apply(obj, [ " print(this.foo)" ]);
+
+obj.myEval = eval;
+
+// still won't work - still indirect 'eval' call!
+// still undefined is printed!
+obj.myEval("print(this.foo)");
+
+function func(code) {
+    eval(code);
+}
+
+// eval called inside func and so get's func's "this" as it's "this"!
+// So, 44 is printed
+
+func.apply(obj, [ "print(this.foo)" ]);