print the result in Java

Hi everyone

i  run a text mining procces  in java.When i  put:

System.out.println(ioResult.getElementAt(0).toString());
                System.out.println(ioResult);

the result is:
350 regular attributes,
special attributes = {
    label = #350: label (numeric/single_value)
    confidence_Positive = #352: confidence(Positive) (real/single_value)
    confidence_Negative = #353: confidence(Negative) (real/single_value)
    prediction = #351: prediction(label) (binominal/single_value)
}
(created by Set Role)

but i want in prediction to have positive or negative not the word 'label'.  How can i print the prediction of the process?

Regards