Java 8提供了新的Nashorn JavaScript引擎，使得我们可以在JVM上开发和运行JS应用。Nashorn JavaScript引擎是javax.script.ScriptEngine的另一个实现版本，这类Script引擎遵循相同的规则，允许Java和JavaScript交互使用，例子代码如下：
package com.ehking.example.java8.newfeature.demo07;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
/**
* Created by shiyanwu on 2017/4/17.
* java测试 Nashorn JavaScript
*/
public class Java8JavaScript {
public static void main(String[] args) {
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("JavaScript");
System.out.println(engine.getClass().getName());
try {
System.out.println("output: " + engine.eval("function show() {return 10;}; show();"));
} catch (ScriptException e) {
e.printStackTrace();
}
// jdk.nashorn.api.scripting.NashornScriptEngine
// output: 10
}
}
