Nashron simple example

Java application may run several script languages like Groovy .
Java uses the Nashron jar in order to execute javascript .
The following example demonstrates using Nashron to execute a simple java script.
The example demonstrates :
1.Transferring data from the java application to the javascript application
2.Reading the java script result
3.Calling from the Javascript to Java methods .

The project

The java wrapper code :

package playwithnashron;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import javax.script.SimpleBindings;
import jdk.nashorn.api.scripting.ScriptObjectMirror;
public class PlayWithNashron {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws ScriptException, InterruptedException {
        ScriptEngineManager scriptEngineManager =       new ScriptEngineManager();
        ScriptEngine nashorn =       scriptEngineManager.getEngineByName("nashorn"); 
        
        nashorn.eval("print('This is java script call')"); 
        
        int NoOfThreads = 3 ; 
        
        SimpleBindings simpleBindings = new SimpleBindings(); 
        
        simpleBindings.put("NoOfThreads", NoOfThreads); 
        String thePath = "C:\\Learn\\Java\\PlayWithNashron\\src\\playwithnashron\\NashCode.js";
        
        ScriptObjectMirror RetValue = (ScriptObjectMirror)nashorn.eval(GetFileText ( thePath ) ,simpleBindings);
      
        for (Integer i = 0 ; i < RetValue.size() ; i ++ )
        {
           Thread theTrhead = (Thread)  RetValue.getSlot (i);
            theTrhead.join();
        }
               
       System.out.println("After wait kiss very very ");   
    }
    
    public static String GetFileText (String pPath )
    {
        StringBuilder RetValue = new StringBuilder();
        
                BufferedReader br = null;
 
		try {
 
			String sCurrentLine;
 
			br = new BufferedReader(new FileReader(pPath));
 
			while ((sCurrentLine = br.readLine()) != null) {
                            RetValue.append(sCurrentLine + "\r\n");
                        }
 
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (br != null)br.close();
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
 
                return RetValue.toString();   
	}
    }

The java script code

var Thread = Java.type("java.lang.Thread"); 
var theThread = Java.extend(Thread,
 {
    run: function() {
        Thread.sleep ( 1000 );
        print("Message in abootle ");     
    } 
 }); 
RetValue = [];
 for ( i = 0 ; i < NoOfThreads ; i ++ )
 {
    var th = new theThread(); 
    th.start(); 
    RetValue.push(th);
}
//Return the value 
RetValue;

The result:
This is java script call
Message in abootle
Message in abootle
Message in abootle
After wait kiss very very

References:
http://www.infoq.com/articles/nashorn
https://avatar.java.net/download.html