Scripting feature in java 6

Question

i m using jython script enging in java 6. I have put in the appropriate
jars i.e jython.jar and jython-engine.jar i classpath
The programm-- >
import javax.script.*;
public class ScriptTest {
     public static void main(String[] args)  {
          try
          ScriptEngineManager factory=new ScriptEngineManager();
          ScriptEngine engine=factory.getEngineByName("jython");
          //ScriptEngine engine=factory.getEngineByName("JavaScript");
          Bindings test=new SimpleBindings();
          test.put("SERIESNAME","FMDM");
          System.out.println(engine.eval("SERIESNAME in ['xyz', 'etc']" , test ));
          //System.out.println(engine.eval(" x = 5 + 7 "));
          //System.out.println(engine.eval(" return " ));
          catch(Exception e)
               e.printStackTrace();
}Each time i m executing this i m getting null .rather i should get the result returned by the script .
System.out.println(engine.eval("SERIESNAME == ['xyz', 'etc']" , test ));
when i m changing my script engine to java script i m getting true printed on my console....but with jython i m getting null
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Answer 1

factory.getEngineByName("jython");
This statement does not return null.If it was
returning null i wud have got null pointer exception
.That's what I thought when you said "Each time i m executing this i m getting null".
And also i m able to exceute script like print. The only point here is tat
it does not return the result after executing the script...
i m able to execute the following --
engine.eval("print hi");
that means jython script engine is working..but its
not retunring the result of the scriptWell, I am pretty sure Java 6 is only bundled with the Mozilla Rhino based JavaScript script engine, no other script engine. It was just a guess of my side that actory.getEngineByName("jython") could return null, but it is definatelly not returning a Jython engine. Look at the API to see what it does return (probably the default JS implementation).