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这篇“Java如何实现聊天室界面”文章的知识点大部分人都不太理解，所以小编给大家总结了以下内容，内容详细，步骤清晰，具有一定的借鉴价值，希望大家阅读完这篇文章能有所收获，下面我们一起来看看这篇“Java如何实现聊天室界面”文章吧。
package Server;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.List;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JList;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class ServerFrame extends JFrame implements ActionListener {
private JButton jbt_start;
private JButton jbt_stop;
private JButton jbt_exit;
private JTextArea jta_disMess;
private JList jlt_disUsers;
private Server server;
public List<String> online_usernames;
public List<Integer> online_usernameids;
public ServerFrame(Server server) {
this.server = server;
online_usernames = new ArrayList<String>();
online_usernameids = new ArrayList<Integer>();
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (UnsupportedLookAndFeelException e) {
e.printStackTrace();
}
setTitle("\u670D\u52A1\u5668");
setIconImage(Toolkit.getDefaultToolkit().getImage("Images/socket.jpg"));
setSize(449, 301);
setResizable(false);
WinCenter.center(this);
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent arg0) {
jbt_exit.doClick();
}
});
getContentPane().setLayout(null);
jbt_start = new JButton("\u542F\u52A8\u670D\u52A1\u5668");
jbt_start.setBounds(32, 23, 103, 34);
jbt_start.addActionListener(this);
getContentPane().add(jbt_start);
jbt_stop = new JButton("\u505C\u6B62\u670D\u52A1\u5668");
jbt_stop.setBounds(145, 23, 103, 34);
jbt_stop.setEnabled(false);
jbt_stop.addActionListener(this);
getContentPane().add(jbt_stop);
jbt_exit = new JButton("\u9000\u51FA\u670D\u52A1\u5668");
jbt_exit.setBounds(258, 23, 103, 34);
jbt_exit.addActionListener(this);
getContentPane().add(jbt_exit);
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(10, 64, 221, 192);
scrollPane.setWheelScrollingEnabled(true);
scrollPane.setBorder(BorderFactory.createTitledBorder("聊天消息"));
getContentPane().add(scrollPane);
jta_disMess = new JTextArea();
scrollPane.setViewportView(jta_disMess);
JScrollPane scrollPane_1 = new JScrollPane();
scrollPane_1.setBounds(258, 65, 157, 191);
scrollPane_1.setBorder(BorderFactory.createTitledBorder("在线用户"));
getContentPane().add(scrollPane_1);
jlt_disUsers = new JList();
jlt_disUsers.setVisibleRowCount(4);
scrollPane_1.setViewportView(jlt_disUsers);
}
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public void actionPerformed(ActionEvent arg0) {
if (arg0.getSource() == jbt_start) {
jbt_start.setEnabled(false);
jbt_stop.setEnabled(true);
server.startServer();
}
if (arg0.getSource() == jbt_stop) {
int flag = JOptionPane.showConfirmDialog(this, "是否要停止服务器？", "",
JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE);
if (flag == JOptionPane.OK_OPTION) {
server.stopServer();
jbt_start.setEnabled(true);
jbt_stop.setEnabled(false);
}
}
if (arg0.getSource() == jbt_exit) {
if (jbt_stop.isEnabled()) {
jbt_stop.doClick();
}
server.close();
}
}
public void setDisUsers(String userNames) {
if (userNames.equals("@userlist")) {
jlt_disUsers.removeAll();
String[] user_null = new String[]{};
jlt_disUsers.setListData(user_null);
} else {
if (userNames.contains("@userlist")) {
String[] dis = userNames.split("@userlist");
String[] disUsernames = new String[dis.length / 2];
int j = 0;
for (int i = 0; i < dis.length; i++) {
disUsernames[j++] = dis[i++];
}
jlt_disUsers.removeAll();
jlt_disUsers.setListData(disUsernames);
}
if (userNames.contains("@exit")) {
String[] dis = {};
jlt_disUsers.setListData(dis);
}
}
}
public void setDisMess(String message) {
if (message.contains("@chat")) {
int local = message.indexOf("@chat");
jta_disMess.append(message.substring(0, local) + "\n");
jta_disMess.setCaretPosition(jta_disMess.getText().length());
}
if (message.contains("@exit")) {
jta_disMess.setText("");
}
}
public void setStartAndStopUnable() {
JOptionPane.showMessageDialog(this, "不能同时开启两个服务器");
jbt_start.setEnabled(false);
jbt_stop.setEnabled(false);
}
}设置窗口居中代码：
package Server;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.Window;
public class WinCenter {
public static void center(Window win) {
Toolkit tkit = Toolkit.getDefaultToolkit();
Dimension sSize = tkit.getScreenSize();
Dimension wSize = win.getSize();
if (wSize.height > sSize.height) {
wSize.height = sSize.height;
}
if (wSize.width > sSize.width) {
wSize.width = sSize.width;
}
win.setLocation((sSize.width - wSize.width) / 2, (sSize.height - wSize.height) / 2);
}
}登录界面
package Client;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.net.Inet4Address;
import java.net.UnknownHostException;
import javax.swing.JTextField;
import javax.swing.JButton;
public class Client_enterFrame extends JFrame implements ActionListener, KeyListener {
public Client_enterFrame(Client client) {
this.client = client;
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
} catch (InstantiationException e1) {
e1.printStackTrace();
} catch (IllegalAccessException e1) {
e1.printStackTrace();
} catch (UnsupportedLookAndFeelException e1) {
e1.printStackTrace();
}
setIconImage(Toolkit.getDefaultToolkit().getImage("Images/socket.jpg"));
setTitle("\u804A\u5929\u5BA4");
getContentPane().setLayout(null);
setSize(296, 249);
WinCenter.center(this);
setResizable(false);
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
jbt_exit.doClick();
}
});
JLabel lblNewLabel = new JLabel("\u7528\u6237\u540D");
lblNewLabel.setFont(new Font("宋体", Font.PLAIN, 14));
lblNewLabel.setBounds(23, 30, 81, 34);
getContentPane().add(lblNewLabel);
jtf_username = new JTextField();
jtf_username.addKeyListener(this);
jtf_username.setBounds(114, 30, 143, 34);
getContentPane().add(jtf_username);
jtf_username.setColumns(10);
JLabel lblNewLabel_1 = new JLabel("\u670D\u52A1\u5668\u5730\u5740");
lblNewLabel_1.setFont(new Font("宋体", Font.PLAIN, 14));
lblNewLabel_1.setBounds(23, 74, 81, 34);
getContentPane().add(lblNewLabel_1);
jtf_hostIp = new JTextField();
jtf_hostIp.setBounds(114, 74, 143, 34);
jtf_hostIp.addKeyListener(this);
getContentPane().add(jtf_hostIp);
try {
String ip = (String) Inet4Address.getLocalHost().getHostAddress();
jtf_hostIp.setText(ip);
} catch (UnknownHostException e) {
e.printStackTrace();
}
jtf_hostIp.setColumns(10);
JLabel lblNewLabel_2 = new JLabel("\u7AEF\u53E3\u53F7");
lblNewLabel_2.setFont(new Font("宋体", Font.PLAIN, 14));
lblNewLabel_2.setBounds(23, 118, 81, 34);
getContentPane().add(lblNewLabel_2);
jtf_hostPort = new JTextField();
jtf_hostPort.addKeyListener(this);
jtf_hostPort.setBounds(114, 118, 143, 34);
getContentPane().add(jtf_hostPort);
jtf_hostPort.setText("5000");
jtf_hostPort.setColumns(10);
jbt_enter = new JButton("\u8FDB\u5165\u804A\u5929\u5BA4");
jbt_enter.addActionListener(this);
jbt_enter.addKeyListener(this);
jbt_enter.setFont(new Font("宋体", Font.PLAIN, 14));
jbt_enter.setBounds(23, 162, 108, 39);
getContentPane().add(jbt_enter);
jbt_exit = new JButton("\u9000\u51FA\u804A\u5929\u5BA4");
jbt_exit.setFont(new Font("宋体", Font.PLAIN, 14));
jbt_exit.setBounds(144, 162, 113, 39);
jbt_exit.addActionListener(this);
getContentPane().add(jbt_exit);
}
/**
*
*/
private static final long serialVersionUID = 1L;
private JTextField jtf_username;
private JTextField jtf_hostIp;
private JTextField jtf_hostPort;
private JButton jbt_enter;
private JButton jbt_exit;
private Client client;
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jbt_exit) {
setVisible(false);
client.exitLogin();
}
if (e.getSource() == jbt_enter) {
String username = jtf_username.getText();
username.trim();
String hostIp = jtf_hostIp.getText();
hostIp.trim();
String hostPort = jtf_hostPort.getText();
hostPort.trim();
if (!username.equals("")) {
if (!hostIp.equals("")) {
if (!hostPort.equals("")) {
String login_mess = client.login(username, hostIp, hostPort);
if (login_mess.equals("true")) {
this.setVisible(false);
client.showChatFrame(username);
} else {
JOptionPane.showMessageDialog(this, login_mess);
}
} else {
JOptionPane.showMessageDialog(this, "服务器连接端口号不能为空！");
}
} else {
JOptionPane.showMessageDialog(this, "服务器地址不能为空！");
}
} else {
JOptionPane.showMessageDialog(this, "用户名不能为空！");
}
}
}
@Override
public void keyPressed(KeyEvent arg0) {
if (arg0.getKeyCode() == KeyEvent.VK_ENTER) {
jbt_enter.doClick();
}
}
@Override
public void keyReleased(KeyEvent arg0) {
}
@Override
public void keyTyped(KeyEvent arg0) {
}
}聊天主界面
package Client;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.List;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.ListModel;
import javax.swing.ListSelectionModel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class Client_chatFrame extends JFrame implements ActionListener,
KeyListener, ListSelectionListener {
public Client_chatFrame(Client client, String title) {
this.client = client;
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (UnsupportedLookAndFeelException e) {
e.printStackTrace();
}
setIconImage(Toolkit.getDefaultToolkit().getImage("Images/socket.jpg"));
setTitle("\u804A\u5929\u5BA4" + " " + title);
setSize(450, 325);
WinCenter.center(this);
setResizable(false);
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent arg0) {
jbt_exit.doClick();
}
});
getContentPane().setLayout(null);
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBorder(BorderFactory.createTitledBorder("聊天消息"));
scrollPane.setBounds(10, 10, 283, 167);
scrollPane.setWheelScrollingEnabled(true);
getContentPane().add(scrollPane);
jta_disMess = new JTextArea();
jta_disMess.setEditable(false);
scrollPane.setViewportView(jta_disMess);
jtf_inputMess = new JTextField();
jtf_inputMess.addKeyListener(this);
jtf_inputMess.setBounds(10, 242, 192, 32);
getContentPane().add(jtf_inputMess);
jtf_inputMess.setColumns(10);
jbt_trans = new JButton("\u53D1 \u9001");
jbt_trans.setFont(new Font("宋体", Font.PLAIN, 14));
jbt_trans.setBounds(212, 241, 93, 32);
jbt_trans.addActionListener(this);
getContentPane().add(jbt_trans);
jbt_clear = new JButton("\u6E05\u9664\u804A\u5929\u8BB0\u5F55");
jbt_clear.setFont(new Font("宋体", Font.PLAIN, 14));
jbt_clear.setBounds(158, 187, 135, 37);
jbt_clear.addActionListener(this);
getContentPane().add(jbt_clear);
jbt_exit = new JButton("\u9000\u51FA\u804A\u5929\u5BA4");
jbt_exit.setFont(new Font("宋体", Font.PLAIN, 14));
jbt_exit.setBounds(20, 189, 128, 37);
jbt_exit.addActionListener(this);
getContentPane().add(jbt_exit);
scrollPane_1 = new JScrollPane();
scrollPane_1.setBorder(BorderFactory.createTitledBorder("在线用户"));
scrollPane_1.setBounds(303, 10, 128, 214);
getContentPane().add(scrollPane_1);
jlt_disUsers = new JList();
jlt_disUsers.setVisibleRowCount(4);
jlt_disUsers.setSelectedIndex(0);
jlt_disUsers
.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
jlt_disUsers.addListSelectionListener(this);
scrollPane_1.setViewportView(jlt_disUsers);
jbt_singlChat = new JButton("\u5355\u4EBA\u804A\u5929");
jbt_singlChat.setBounds(315, 241, 116, 32);
jbt_singlChat.addActionListener(this);
getContentPane().add(jbt_singlChat);
}
/**
*
*/
private static final long serialVersionUID = 1L;
private JTextField jtf_inputMess;
private JTextArea jta_disMess;
private JButton jbt_trans;
private JButton jbt_clear;
private JButton jbt_exit;
private JList jlt_disUsers;
private JButton jbt_singlChat;
private JScrollPane scrollPane_1;
private Client client;
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jbt_clear) {
jta_disMess.setText("");
}
if (e.getSource() == jbt_trans) {
String mess = jtf_inputMess.getText();
mess.trim();
jtf_inputMess.setText("");
if (mess.equals("")) {
JOptionPane.showMessageDialog(this, "不能发送空消息");
jtf_inputMess.setText("");
} else {
client.transMess(mess);
}
}
if (e.getSource() == jbt_exit) {
if (JOptionPane.OK_OPTION == JOptionPane.showConfirmDialog(this,
"是否确定要退出聊天室？", "提示", JOptionPane.OK_CANCEL_OPTION)) {
this.setVisible(false);
client.exitChat();
System.exit(0);
}
}
if (e.getSource() == jbt_singlChat) {
String user_names = (String) jlt_disUsers.getSelectedValue();
if (user_names == null) {
JOptionPane.showMessageDialog(this, "您未选择聊天对象\n请选择要单独聊天的对象");
} else {
if (!client.c_singleFrames.containsKey(user_names)) {
createSingleChatFrame(user_names);
} else {
client.c_singleFrames.get(user_names)
.setFocusableWindowState(true);
}
}
}
}
@Override
public void keyPressed(KeyEvent arg0) {
if (arg0.getKeyCode() == KeyEvent.VK_ENTER) {
if (arg0.getSource() == jtf_inputMess) {
jbt_trans.doClick();
}
}
}
@Override
public void keyReleased(KeyEvent arg0) {
}
@Override
public void keyTyped(KeyEvent arg0) {
}
public void setDisMess(String substring) {
int local = substring.indexOf("@chat");
jta_disMess.append(substring.substring(0, local) + "\n");
jta_disMess.setCaretPosition(jta_disMess.getText().length());
}
public void setDisUsers(String chat_re) {
String[] infos = chat_re.split("@userlist");
String[] info = new String[infos.length / 2];
for (int i = 1; i < infos.length; i++) {
int id_user = 0;
try {
id_user = Integer.parseInt(infos[i]);
if (client.getThreadID() == id_user) {
if (!client.username.equals(infos[i - 1])) {
JOptionPane.showMessageDialog(this,
"由于有同名的用户登录，所以您的用户名后面加上了编号");
client.username = infos[i - 1];
this.setTitle("聊天室 " + client.username);
break;
} else {
break;
}
} else {
i++;
}
} catch (Exception e) {
}
}
if (infos.length == 2) {
String[] s = new String[]{};
if (!client.c_singleFrames.isEmpty()) {
ListModel list = jlt_disUsers.getModel();
for (int i = 0; i < list.getSize(); i++) {
if (client.c_singleFrames.get(list.getElementAt(i)) != null) {
client.c_singleFrames.get(list.getElementAt(i))
.setExitNotify();
}
}
}
jlt_disUsers.removeAll();
jlt_disUsers.setListData(s);
} else {
if ((infos.length / 2 - 1) < client.username_online.size()) {
// 有人下线
List<String> rec = new ArrayList<String>();
int i = 0;
for (; i < infos.length; i++) {
rec.add(0, infos[i++]);
}
for (i = 0; i < client.username_online.size(); i++) {
if (!rec.contains(client.username_online.get(i))) {
break;
}
}
String name = client.username_online.get(i);
client.username_online.remove(i);
try {
client.clientuserid.remove(i);
} catch (Exception e) {
e.printStackTrace();
}
if (client.c_singleFrames.containsKey(name)) {
client.c_singleFrames.get(name).closeSingleFrame();
client.c_singleFrames.remove(name);
}
} else {
List<Integer> online = new ArrayList<Integer>();
for (int i = 0; i < client.username_online.size(); i++) {
online.add(0, client.clientuserid.get(i));
}
if (online.isEmpty()) {
for (int i = 1; i < infos.length; i++) {
if ((int) Integer.parseInt(infos[i]) != client
.getThreadID()) {
client.username_online.add(0, infos[i - 1]);
client.clientuserid.add(0,
Integer.parseInt(infos[i]));
}
i++;
}
} else {
for (int i = 1; i < infos.length; i++) {
if (Integer.parseInt(infos[i]) != client.getThreadID()) {
if (!online.contains(Integer.parseInt(infos[i]))) {
client.username_online.add(0, infos[i - 1]);
client.clientuserid.add(0,
Integer.parseInt(infos[i]));
} else {
String name = client.username_online
.get(client.clientuserid
.indexOf(Integer
.parseInt(infos[i])));
if (!name.equals(infos[i - 1])) {
if (client.c_singleFrames.containsKey(name)) {
Client_singleFrame cf = client.c_singleFrames
.get(name);
cf.setTitle(name);
client.c_singleFrames.remove(name);
client.c_singleFrames.put(name, cf);
cf.setVisible(false);
}
client.username_online.remove(name);
client.clientuserid.remove(new Integer(
Integer.parseInt(infos[i])));
client.username_online.add(0, infos[i - 1]);
client.clientuserid.add(0,
Integer.parseInt(infos[i]));
}
}
}
i++;
}
}
}
try {
for (int i = 0; i < client.username_online.size(); i++) {
info[i] = client.username_online.get(i);
}
} catch (Exception e) {
}
jlt_disUsers.removeAll();
jlt_disUsers.setListData(info);
}
}
public void closeClient() {
JOptionPane.showMessageDialog(this, "服务器已关闭", "提示",
JOptionPane.OK_OPTION);
client.exitClient();
setVisible(false);
}
@Override
public void valueChanged(ListSelectionEvent e) {
if (e.getSource() == jlt_disUsers) {
}
}
public void createSingleChatFrame(String name) {
Client_singleFrame c_singlFrame = new Client_singleFrame(client, name);
client.c_singleFrames.put(name, c_singlFrame);
try {
c_singlFrame.userThreadID = client.clientuserid
.get(client.username_online.indexOf(name));
} catch (Exception e) {
}
c_singlFrame.setVisible(true);
}
public void setSingleFrame(String chat_re) {
String[] infos = chat_re.split("@single");
try {
if (client.c_singleFrames.containsKey(infos[0])) {
client.c_singleFrames.get(infos[0]).setDisMess(infos[3]);
} else {
createSingleChatFrame(infos[0]);
client.c_singleFrames.get(infos[0]).setDisMess(infos[3]);
}
} catch (Exception e) {
}
}
}单人聊天界面
package Client;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Client_singleFrame extends JFrame implements ActionListener, KeyListener {
/**
*
*/
private static final long serialVersionUID = 1L;
private static JTextArea jta_disMess;
private JTextField jtf_inputMess;
private JButton jbt_trans;
public int userThreadID = 0;
private Client client;
public Client_singleFrame(Client client, String title) {
this.client = client;
init(title);
}
private void init(String title) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
} catch (InstantiationException e1) {
e1.printStackTrace();
} catch (IllegalAccessException e1) {
e1.printStackTrace();
} catch (UnsupportedLookAndFeelException e1) {
e1.printStackTrace();
}
setIconImage(Toolkit.getDefaultToolkit().getImage("Images/socket.jpg"));
WinCenter.center(this);
setTitle(title);
setSize(400, 400);
setResizable(false);
setContentPane(createContentPanel());
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
closeSingleFrame();
}
});
}
private Container createContentPanel() {
JPanel jp = new JPanel();
jp.setBorder(BorderFactory.createTitledBorder("聊天消息"));
jp.setLayout(new BorderLayout());
jta_disMess = new JTextArea();
jta_disMess.setEditable(false);
jp.add(BorderLayout.CENTER, new JScrollPane(jta_disMess));
jp.add(BorderLayout.SOUTH, createInput());
return jp;
}
private Component createInput() {
JPanel jp = new JPanel();
jp.setBorder(BorderFactory.createTitledBorder("发送消息"));
jp.setLayout(new BorderLayout());
jtf_inputMess = new JTextField();
jtf_inputMess.addKeyListener(this);
jbt_trans = new JButton("发送");
jbt_trans.addActionListener(this);
jp.add(jtf_inputMess, BorderLayout.CENTER);
jp.add(jbt_trans, BorderLayout.EAST);
return jp;
}
@Override
public void keyPressed(KeyEvent arg0) {
if (arg0.getKeyCode() == KeyEvent.VK_ENTER) {
if (arg0.getSource() == jtf_inputMess) {
jbt_trans.doClick();
}
}
}
@Override
public void keyReleased(KeyEvent arg0) {
}
@Override
public void keyTyped(KeyEvent arg0) {
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jbt_trans) {
String str = jtf_inputMess.getText();
str.trim();
jtf_inputMess.setText("");
if (str.equals("")) {
JOptionPane.showMessageDialog(this, "信息不能为空");
} else {
SimpleDateFormat form = new SimpleDateFormat("yyyy-MM-dd HH:mm");
String date = form.format(new Date());
String mess = client.username + " " + date + "\n" + str;
jta_disMess.append(mess + "\n");
jta_disMess.setCaretPosition(jta_disMess.getText().length());
int index = client.username_online.indexOf(this.getTitle());
String info = client.username + "@single" + client.getThreadID() + "@single" +
(int) client.clientuserid.get(index) + "@single" +
mess + "@single";
try {
client.dos.writeUTF(info);
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
public void setDisMess(String chat_re) {
jta_disMess.append(chat_re + "\n");
jta_disMess.setCaretPosition(jta_disMess.getText().length());
}
public void closeSingleFrame() {
client.c_singleFrames.remove(this.getTitle());
setVisible(false);
}
public void setExitNotify() {
jta_disMess.append(this.getTitle() + "已下线.....");
jbt_trans.setEnabled(false);
}
}设置窗体居中
package Client;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.Window;
public class WinCenter {
public static void center(Window win) {
Toolkit tkit = Toolkit.getDefaultToolkit();
Dimension sSize = tkit.getScreenSize();
Dimension wSize = win.getSize();
if (wSize.height > sSize.height) {
wSize.height = sSize.height;
}
if (wSize.width > sSize.width) {
wSize.width = sSize.width;
}
win.setLocation((sSize.width - wSize.width) / 2, (sSize.height - wSize.height) / 2);
}
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