Getting Started - Scripting in Java: Integrating with Groovy and JavaScript - page 10

public static void main(String[] args) {
// Get the script engine manager
ScriptEngineManager manager = new ScriptEngineManager();
// Try executing scripts in Nashorn, Groovy, Jython, and JRuby
execute(manager, "JavaScript", "print('Hello JavaScript')");
execute(manager, "Groovy", "println('Hello Groovy')");
execute(manager, "jython", "print 'Hello Jython'");
execute(manager, "jruby", "puts('Hello JRuby')");
}
public static void execute(ScriptEngineManager manager,
String engineName,
String script) {
// Try getting the engine
ScriptEngine engine = manager.getEngineByName(engineName);
if (engine == null) {
System.out.println(engineName + " is not available.");
return;
}
// If we get here, it means we have the engine installed.
// So, run the script
try {
engine.eval(script);
}
catch (ScriptException e) {
e.printStackTrace();
}
}
}
Hello JavaScript
Hello Groovy
Hello Jython
Hello JRuby
Sometimes you may want to play with a scripting language just for fun, and you
do not know the syntax that is used to print a message on the standard output. The
ScriptEngineFactory class contains a method named getOutputStatement(String