A more common use of Nashorn, compared to using it as a command-line tool, is using it as an embedded interpreter. The javax.script API is public and can be accessed via the nashorn identifier. The following code demonstrates how we can gain access to Nashorn, define a JavaScript function, and obtain the results--all from within a Java application:
// required imports import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; public class EmbeddedAddTest { public static void main(String[] args) throws Throwable { // instantiate a new ScriptEngineManager ScriptEngineManager myEngineManager = new ScriptEngineManager(); // instantiate a new Nashorn ScriptEngine ScriptEngine myEngine ...
