How To Get Java ScriptEngine By Name

This example shows how to get the script engine by using the name. This is the first step when you are using the Java script engines for executing the scripts. Before you run the scripts, you must get the javax.script.ScriptEngine instance from javax.script.ScriptEngineManager. The engines are registered using the Names ,Extensions and Mimetypes. This example snipped retrieving the script engine by using the name by calling the method getEngineByName().

Lets look at the example.

GetScriptEngineExample.java

[code lang=”java”]
package javabeat.net.script;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

/**
* Get ScriptEngine By Name Example.
*
* @author Krishna
*
*/
public class GetScriptEngineExample {
public static void main(String[] args) throws ScriptException{

// Create ScriptEngine
ScriptEngineManager engineManager = new ScriptEngineManager();

//Get script engine using name
ScriptEngine engine = engineManager.getEngineByName("JavaScript");

//Evaluate simple printing message
engine.eval("println(‘ScriptEngine Loaded using name!!’)");
engine.eval("print(‘Welcome To JavaBeat!!!’)");

}
}
[/code]

Output…

[code]
ScriptEngine Loaded using name!!
Welcome To JavaBeat!!!
[/code]