Mercurial > jdk8-mips64-public > nashorn / annotate
samples/LambdaAsFunc.java@1170f7a6fb8e (annotated)
samples/LambdaAsFunc.java
Mon, 25 Jan 2016 12:35:30 -0800
- author
- asaha
- date
- Mon, 25 Jan 2016 12:35:30 -0800
- changeset 1782
- 1170f7a6fb8e
- parent 1524
- 3f4320a01539
- permissions
- -rw-r--r--
Added tag jdk8u75-b05 for changeset dfa12474455f
| sundar@1524 | 1 | /* |
| sundar@1524 | 2 | * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| sundar@1524 | 3 | * |
| sundar@1524 | 4 | * Redistribution and use in source and binary forms, with or without |
| sundar@1524 | 5 | * modification, are permitted provided that the following conditions |
| sundar@1524 | 6 | * are met: |
| sundar@1524 | 7 | * |
| sundar@1524 | 8 | * - Redistributions of source code must retain the above copyright |
| sundar@1524 | 9 | * notice, this list of conditions and the following disclaimer. |
| sundar@1524 | 10 | * |
| sundar@1524 | 11 | * - Redistributions in binary form must reproduce the above copyright |
| sundar@1524 | 12 | * notice, this list of conditions and the following disclaimer in the |
| sundar@1524 | 13 | * documentation and/or other materials provided with the distribution. |
| sundar@1524 | 14 | * |
| sundar@1524 | 15 | * - Neither the name of Oracle nor the names of its |
| sundar@1524 | 16 | * contributors may be used to endorse or promote products derived |
| sundar@1524 | 17 | * from this software without specific prior written permission. |
| sundar@1524 | 18 | * |
| sundar@1524 | 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| sundar@1524 | 20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| sundar@1524 | 21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| sundar@1524 | 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| sundar@1524 | 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| sundar@1524 | 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| sundar@1524 | 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| sundar@1524 | 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| sundar@1524 | 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| sundar@1524 | 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| sundar@1524 | 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| sundar@1524 | 30 | */ |
| sundar@1524 | 31 | |
| sundar@1524 | 32 | import javax.script.*; |
| sundar@1524 | 33 | import java.util.function.*; |
| sundar@1524 | 34 | |
| sundar@1524 | 35 | // example demonstrating that arbitrary Lambda can be called as function from script |
| sundar@1524 | 36 | |
| sundar@1524 | 37 | public class LambdaAsFunc { |
| sundar@1524 | 38 | public static void main(String[] args) throws Exception { |
| sundar@1524 | 39 | ScriptEngineManager m = new ScriptEngineManager(); |
| sundar@1524 | 40 | ScriptEngine e = m.getEngineByName("nashorn"); |
| sundar@1524 | 41 | |
| sundar@1524 | 42 | // expose a lambda as top-level script function |
| sundar@1524 | 43 | e.put("upper", (Function<String, String>) String::toUpperCase); |
| sundar@1524 | 44 | |
| sundar@1524 | 45 | // call lambda as though it is a normal script function |
| sundar@1524 | 46 | System.out.println(e.eval("upper('hello')")); |
| sundar@1524 | 47 | } |
| sundar@1524 | 48 | } |
