HI all, I am creating a Java application in which i want to open a popup which displays some message.Currentl i am using JOptionPane.showMessageDialog(this,"msg"); method which shows dialog with OK button. But I dont understand how to fire an event in the OK button of this window. Is there any method by which i will be able to execure some code when OK button is clicked. I tried using windowClose event but it doesnt work . Someone please help me in this.