本文實例為大家分享了java實現簡單聊天室的具體代碼，供大家參考，具體內容如下
先整理下思路：
1.創建一個通信服務端，傳入端口號和相關的流后等待客戶端連接，并初始化圖形界面。
2.創建一個JFrame，用于寫出聊天的界面，這里界面名稱由其他類傳入。
3.把客戶端創建的方法寫進JFrame（當然這里很粗糙的方法）
4.設置按鈕的監聽事件，發送消息和離線功能
首先創建一個服務端的類
import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;import com.jero.jframe.ChatSocketJFrame;//創建服務端public class ChatServerSocket{ //構造初始化方法 public ChatServerSocket(String name,int port) throws IOException{ //創建Socket服務連接對象 ServerSocket serverSocket = new ServerSocket(port); //等待客戶端連接 Socket client = serverSocket.accept(); //初始化聊天界面 try { new ChatSocketJFrame(name,client); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } //關閉流 serverSocket.close(); } public static void main(String[] args) throws Exception{ new ChatServerSocket("服務端",8001);//啟動服務端，指定網名和端口 }}package com.jero.jframe;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.InetAddress;import java.net.Socket;import java.net.UnknownHostException;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.border.EmptyBorder;import com.jero.socket.ChatServerSocket;import javax.swing.JTextPane;import javax.swing.JTextField;import javax.swing.JButton;import javax.swing.JTextArea;public class ChatSocketJFrame extends JFrame implements ActionListener { private Socket socket; private String name; private JButton BT_SEND,BT_LEAVE,BT_LOGIN; private JTextArea textArea; private JPanel contentPane; private JTextField textField; private PrintWriter cout; /** * Launch the application. * @throws Exception * @throws IOException * @throws UnknownHostException */ public static void main(String[] args) throws UnknownHostException, IOException, Exception { //實例化界面以及客戶端 new ChatSocketJFrame("客戶端","127.0.0.1",8001); } /** * Create the frame. */ public ChatSocketJFrame(String name, Socket socket)throws Exception, IOException { //聊天室界面 super("聊天室"+name+" "+InetAddress.getLocalHost()+" "+socket.getPort()); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 733, 519); this.textArea = new JTextArea(); this.textArea.setEditable(false); this.getContentPane().add(new JScrollPane(this.textArea)); JPanel panel = new JPanel(); this.getContentPane().add(panel, "South"); this.textField = new JTextField(16); panel.add(this.textField); BT_SEND = new JButton("發送"); panel.add(BT_SEND); BT_SEND.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub System.out.println("按鈕已點擊"); cout.println(name+"說: "+textField.getText()+"/n"); textArea.append("我說: "+textField.getText()+"/n"); textField.setText(""); } }); BT_LEAVE = new JButton("離線"); panel.add(BT_LEAVE); BT_LEAVE.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub textArea.append("我離線"); cout.println(name+"離線/n"+"bye"); BT_LEAVE.setEnabled(false); BT_SEND.setEnabled(false); } }); this.setVisible(true); //開始創建通信 this.socket = socket; this.name = name; //獲得Socket的輸出流并立即刷新 this.cout = new PrintWriter(socket.getOutputStream(),true); //把網名傳給對方 this.cout.println(name); //獲得Socket對象的輸入流，創建字符輸入流 BufferedReader buff = new BufferedReader(new InputStreamReader(socket.getInputStream())); //接受對方的網名 String aline = buff.readLine(); //顯示對方發送的內容 textArea.append("連接"+aline+"成功！！/n"); aline = buff.readLine(); //如果內容不為空并且對方不離線，則相互傳送消息 while(aline!=null&&!aline.equals("bye")){ textArea.append(aline+"/r/n"); aline = buff.readLine(); } //當對方離線時，關閉所有的流 buff.close(); cout.close(); socket.close(); //把按鈕設置為不可操作 BT_SEND.setEnabled(false); BT_LEAVE.setEnabled(false); } /** * @wbp.parser.constructor */ public ChatSocketJFrame(String name,String host,int port) throws UnknownHostException, IOException, Exception{ //創建客戶端 this(name,new Socket(host,port)); } @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub //可以把動作監聽寫進此函數，這個就不演示了 }}以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持VeVb武林網。
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