This example demonstrates how to create a JavaScript interpreter or the ScriptEngine
to run JavaScript in Java. The classes related to scripting is packaged under the javax.script.*
package. In this example we show you how to create the JavaScript engine by using the engine extension.
package org.kodejava.script;
import javax.script.ScriptEngineManager;
import javax.script.ScriptEngine;
public class GettingJavaScriptEngine {
public static void main(String[] args) {
// Creating an instance of ScriptManager. With ScriptManager in hand we
// can create an interpreter or ScriptEngine to run JavaScript.
ScriptEngineManager manager = new ScriptEngineManager();
// Calling manager.getEngineByExtension("js") returns a ScriptEngine
// implementation for JavaScript engine.
ScriptEngine engine = manager.getEngineByExtension("js");
// Do something with the script engine.
System.out.println("Engine = " + engine);
}
}
The output of the code snippet:
Engine = com.oracle.truffle.js.scriptengine.GraalJSScriptEngine@56235b8e
Maven Dependencies
<dependencies>
<dependency>
<groupId>org.graalvm.js</groupId>
<artifactId>js</artifactId>
<version>22.3.2</version>
</dependency>
<dependency>
<groupId>org.graalvm.js</groupId>
<artifactId>js-scriptengine</artifactId>
<version>22.3.2</version>
</dependency>
</dependencies>
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