import?java.awt.BorderLayout;
import?java.awt.EventQueue;

import?javax.swing.Jframe;
import?javax.swing.JPanel;
import?javax.swing.border.EmptyBorder;
import?javax.swing.JLabel;
import?javax.swing.JOptionPane;
import?javax.swing.JTextField;
import?javax.swing.JButton;
import?java.awt.event.ActionListener;
import?java.awt.event.ActionEvent;

public?class?CheckUsername?extends?Jframe?{
????
????private?JPanel?contentPane;
????private?JTextField?usernameField;
????
????/**
?????*?Launch?the?application.
?????*/
????public?static?void?main（String[]?args）?{
????????EventQueue.invokeLater（new?Runnable（）?{
????????????public?void?run（）?{
????????????????try?{
????????????????????CheckUsername?frame?=?new?CheckUsername（）;
????????????????????frame.setVisible（true）;
????????????????}?catch?（Exception?e）?{
????????????????????e.printStackTrace（）;
????????????????}
????????????}
????????}）;
????}
????
????/**
?????*?Create?the?frame.
?????*/
????public?CheckU

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????301??2010-07-14?15:33??.classpath
?????文件?????????379??2010-09-07?13:19??.project
?????文件?????????635??2010-07-14?15:33??.settings\org.eclipse.jdt.core.prefs
?????文件?????????712??2013-11-21?08:40??bin\CheckUsername$1.class
?????文件?????????662??2013-11-21?08:40??bin\CheckUsername$2.class
?????文件?????????664??2013-11-21?08:40??bin\CheckUsername$3.class
?????文件????????2905??2013-11-21?08:40??bin\CheckUsername.class
?????文件????????3336??2010-07-14?19:00??src\CheckUsername.java