I have two combo box the items first one is (women and men).I want when user select women in first combo box the list of women\'s dress will appear in second combo box and w
You have to add event listener to the first combobox. This way you will know when its selection changes, you can interrogate it and fill your second combobox out with appropriate data.
More information is at http://docs.oracle.com/javase/tutorial/uiswing/components/combobox.html#listeners