showing pop up dialog box

hii I want show a pop up Dialog box when i click on to button

Explanation:

Actually i m creating a program in which i send a mail to email id I want to take email address to send mail for that I want a pop up dialog which ask me to type email valid address after that i want to take that email address from that dialog box 开发者_运维问答for send mail

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You can use JOptionPane for that

http://java.sun.com/docs/books/tutorial/uiswing/components/dialog.html#input