ScriptEngine is Null for getEngineByName("JavaScript")?

Question

ScriptEngine engine = new ScriptEngineManager().getEngineByName("JavaScript");

engine is null??? Also i try to iterate through the scriptEnginefactories it's zero...

i have js-1.7R1.jar on my classpath...can anyone tell me what i need to do else to register the javascript engine( I found Rhino which is js-1.7r.jar)

Thanks.

Answer 1

"Eclipse uses its own compiler, but uses the system's JRE..." - Bart Kiers

Make sure the JRE is 1.6 or higher. Based on the comments, Jeryl Cook had eclipse set to JRE 1.5. He removed this from inside eclipse and added JRE 1.6 which worked and solved his problem.