1 /*

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     4  * Redistribution and use in source and binary forms, with or without

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    31 

    32 import javax.script.*;

    33 import java.util.function.*;

    34 

    35 // example demonstrating that arbitrary Lambda can be called as function from script

    36 

    37 public class LambdaAsFunc {

    38     public static void main(String[] args) throws Exception {

    39         ScriptEngineManager m = new ScriptEngineManager();

    40         ScriptEngine e = m.getEngineByName("nashorn");

    41 

    42         // expose a lambda as top-level script function

    43         e.put("upper", (Function<String, String>) String::toUpperCase);

    44 

    45         // call lambda as though it is a normal script function

    46         System.out.println(e.eval("upper('hello')"));

    47     }

    48 }