简单实现聊天程序源代码

package userUI; import java.awt.Color; import java.awt.Dimension; import java.awt.Rectangle; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.net.InetAddress; import java.net.UnknownHostException; import javax.swing.JApplet; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextArea; import javax.swing.JTextField; import javax.swing.border.EtchedBorder; import javax.swing.border.LineBorder; import javax.swing.border.TitledBorder; public class UserRegUI extends JApplet { /** * 窗体 */ private JFrame jFrame = null; /** * 添加生成后的所有组件 */ private JPanel jContentPane = null; /** * 放置"用户昵称" */ private JLabel jLabel = null; /** * 放置"用户密码" */ private JLabel jLabel1 = null; /** * 放置"姓名" */ private JLabel jLabel2 = null; /** * 放置"性别" */ private JLabel jLabel3 = null; /** * 放置"年龄" */ private JLabel jLabel4 = null; /** * 放置"星座" */ private JLabel jLabel7 = null; /** * 用户昵称输入框 */ private JTextField jTextField = null; /** * 用户密码输入框 */ private JPasswordField jPasswordField = null; /** * 用户性别选择 */ private JComboBox jComboBox = null; /** * 用户星座选择 */ private JComboBox jComboBox3 = null; /** * 用户姓名输入框 */ private JTextField jTextField1 = null; /** * 用户年龄输入框 */ private JTextField jTextField2 = null; /** * 个人说明输入文本域 */ private JTextArea jTextArea = null; /** * 取消按钮 */ private JButton jButton = null; /** * 注册按钮 */ private JButton jButton1 = null; /** * 注册IP */ private JLabel IP = null; /** *获取本地IP */ public static InetAddress getLocalHost() throws UnknownHostException { InetAddress LocalIP = InetAddress.getLocalHost(); return LocalIP; } /** * 此方法初始化jFrame */ public JFrame getJFrame() { if (jFrame == null) { jFrame = new JFrame(); jFrame.setSize(new Dimension(353, 335)); jFrame.setTitle("用户注册"); Toolkit toolkit = jFrame.getToolkit(); Dimension screen = toolkit.getScreenSize(); jFrame.setIconImage(Toolkit.getDefaultToolkit().getImage( getClass().getResource("/picture/client.jpg"))); jFrame.setBounds(screen.width / 2 - 371 / 2, screen.height / 2 - 353 / 2, 371, 353);// 让窗体在屏幕正中央显示 jFrame.setContentPane(getJContentPane()); jFrame.setResizable(false);// 固定窗口大小 jFrame.setVisible(true); jFrame.setDefaultCloseOperation(1); } return jFrame; } /** * 此方法初始化jContentPane */ private JPanel getJContentPane() { if (jContentPane == null) { jLabel7 = new JLabel(); jLabel7.setBorder(new EtchedBorder(EtchedBorder.LOWERED)); jLabel7.setBounds(new Rectangle(193, 119, 56, 26)); jLabel7.setText(" 星 座"); jLabel4 = new JLabel(); jLabel4.setBorder(new EtchedBorder(EtchedBorder.LOWERED)); jLabel4.setBounds(new Rectangle(193, 80, 56, 26)); jLabel4.setText(" 性 别"); jLabel3 = new JLabel(); jLabel3.setBorder(new EtchedBorder(EtchedBorder.LOWERED)); jLabel3.setBounds(new Rectangle(23, 119, 56, 24)); jLabel3.setText(" 年 龄"); jLabel2 = new JLabel(); jLabel2.setBorder(new EtchedBorder(EtchedBorder.LOWERED)); jLabel2.setBounds(new Rectangle(23, 80, 56, 24)); jLabel2.setText(" 姓 名"); jLabel1 = new JLabel(); jLabel1.setBorder(new EtchedBorder(EtchedBorder.LOWERED)); jLabel1.setBounds(new Rectangle(23, 46, 56, 24)); jLabel1.setText("用户密码"); jLabel = new JLabel(); jLabel.setBorder(new EtchedBorder(EtchedBorder.LOWERED)); jLabel.setBounds(new Rectangle(23, 13, 56, 24)); jLabel.setText("用户昵称"); jContentPane = new JPanel(); jContentPane.setBackground(new Color(153, 153, 255)); jContentPane.setLayout(null); jContentPane.setSize(new Dimension(344, 303)); jContentPane.add(jLabel); jContentPane.add(jLabel1); jContentPane.add(jLabel2); jContentPane.add(jLabel3); jContentPane.add(getJTextField()); jContentPane.add(getJPasswordField()); jContentPane.add(jLabel4); jContentPane.add(jLabel7); jContentPane.add(getJComboBox()); jContentPane.add(getJComboBox3()); jContentPane.add(getJTextField1()); jContentPane.add(getJTextField2()); jContentPane.add(getJTextArea()); jContentPane.add(getJButton()); jContentPane.add(getJButton1()); jContentPane.add(getIP()); } return jContentPane; } /** * 设置注册IP */ public JLabel getIP() { if(IP == null) IP = new JLabel(); IP.setBounds(136, 275, 78, 18); IP.setVisible(false); try { IP.setText(getLocalHost().getHostAddress()); } catch (UnknownHostException e) { e.printStackTrace(); } return IP; } /** * 此方法初始化 jTextField */ public JTextField getJTextField() { if (jTextField == null) { jTextField = new JTextField(); jTextField.setBorder(new LineBorder(Color.black, 1, false)); jTextField.setBounds(new Rectangle(87, 14, 149, 24)); } return jTextField; } /** * 此方法初始化jPasswordField */ public JPasswordField getJPasswordField() { if (jPasswordField == null) { jPasswordField = new JPasswordField(); jPasswordField.setBorder(new LineBorder(Color.black, 1, false)); jPasswordField.setBounds(new Rectangle(85, 47, 151, 24)); } return jPasswordField; } /** * 此方法初始化jComboBox */ public JComboBox getJComboBox() { if (jComboBox == null) { String[] sex = { "男", "女" }; jComboBox = new JComboBox(sex); jComboBox.setSelectedIndex(0); jComboBox.setBounds(new Rectangle(255, 81, 63, 24)); } return jComboBox; } /** * 此方法初始化jComboBox3 */ public JComboBox getJComboBox3() { if (jComboBox3 == null) { String[] xingzuo = { "双鱼座", "水瓶座", "白羊座", "金牛座", "双子座", "巨蟹座", "狮子座", "处女座", "天称座", "天蝎座", "射手座", "魔羯座" }; jComboBox3 = new JComboBox(xingzuo); jComboBox3.setSelectedIndex(0); jComboBox3.setBounds(new Rectangle(255, 120, 78, 24)); } return jComboBox3; } /** * 此方法初始化jTextField1 */ public JTextField getJTextField1() { if (jTextField1 == null) { jTextField1 = new JTextField(); jTextField1.setBorder(new LineBorder(Color.black, 1, false)); jTextField1.setBounds(new Rectangle(86, 81, 78, 24)); } return jTextField1; } /** * 此方法初始化jTextField2 */ public JTextField getJTextField2() { if (jTextField2 == null) { jTextField2 = new JTextField(); jTextField2.setBorder(new LineBorder(Color.black, 1, false)); jTextField2.setBounds(new Rectangle(85, 120, 79, 24)); } return jTextField2; } /** * 此方法初始化jTextArea */ public JTextArea getJTextArea() { if (jTextArea == null) { jTextArea = new JTextArea(); jTextArea.setLineWrap(true); jTextArea.setRows(3); jTextArea.setBorder(new TitledBorder(null, "个人说明", TitledBorder.DEFAULT_JUSTIFICATION, TitledBorder.DEFAULT_POSITION, null, null)); jTextArea.setText(""); jTextArea.setBounds(new Rectangle(23, 166, 310, 100)); } return jTextArea; } /** * 此方法初始化jButton */ public JButton getJButton() { if (jButton == null) { jButton = new JButton(); jButton.setBounds(new Rectangle(220, 272, 60, 25)); jButton.setText("注册"); } return jButton; } /** * 此方法初始化jButton1 */ public JButton getJButton1() { if (jButton1 == null) { jButton1 = new JButton(); jButton1.setBounds(new Rectangle(60, 272, 60, 25)); jButton