Use an external file containing the javascript code. The .JS file is loaded from the classpath.

    

import java.io.InputStreamReader;
import java.util.List;

import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

public class Main {
  public static void main(String[] args) throws Exception {
    ScriptEngineManager mgr = new ScriptEngineManager();
    ScriptEngine engine = mgr.getEngineByName("javascript");

    engine.eval(new InputStreamReader(Main.class.getResourceAsStream("scripting.js")));

    List<String> list1 = (List<String>) engine.get("list1");
    if (list1 != null) {
      for (String s : (List<String>) list1) {
        System.out.println(s);
      }
    }
    Invocable engineInv = (Invocable) engine;
    Object obj = engine.get("listObject");
    Object list2 = engineInv.invokeMethod(obj, "getList2");
    if (list2 != null) {
      for (String s : (List<String>) list2) {
        System.out.println(s);
      }
    }
  }
}

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Use an external file containing the javascript code. The .JS file is loaded from the classpath. : Script Engines « JDK 6 « Java

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