how to check checkbox on iTextPdf?

Question

how to check checkbox on iText?

form.setField("pt_gender_female", "On");
form.setField("pt_gender_female", true);

I did couple of trial and error but none of these worked. I searched but didn't find the perfect answer.

Answer 1

String states[] = stamper.getAcroFields().getAppearanceStates("pt_gender_female");
form.setField("pt_gender_female",states[1]);

I tried the abode snipet. It checked the checkbox.