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StackOverflow 文件
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Java Language 教程
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Nashorn JavaScript 引擎
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從指令碼實現介面
import java.io.FileReader;
import java.io.IOException;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
public class InterfaceImplementationExample {
public static interface Pet {
public void eat();
}
public static void main(String[] args) throws IOException {
// Obtain an instance of JavaScript engine
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("nashorn");
try {
//evaluate a script
/* pet.js */
/*
var Pet = Java.type("InterfaceImplementationExample.Pet");
new Pet() {
eat: function() { print("eat"); }
}
*/
Pet pet = (Pet) engine.eval(new FileReader("pet.js"));
pet.eat();
} catch (ScriptException ex) {
ex.printStackTrace();
}
// Outcome:
// 'eat' printed on standard output
}
}