本文实例为大家分享了Java实现在线聊天功能的具体代码，供大家参考，具体内容如下
效果
关键代码
创建Client.java
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
public class Client {
public static void main(String[] args) {
try {
// 创建8888端口
Socket s = new Socket("127.0.0.1", 8888);
// 启动发送消息线程
new SendThread(s).start();
// 启动接受消息线程
new RecieveThread(s).start();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}创建Server.java
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class Server {
public static void main(String[] args) {
try {
// 监听8888端口
ServerSocket ss = new ServerSocket(8888);
System.out.println("监听在端口号:8888");
Socket s = ss.accept();
//启动发送消息线程
new SendThread(s).start();
//启动接受消息线程
new RecieveThread(s).start();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}创建RecieveThread.java
import java.io.*;
import java.net.Socket;
public class RecieveThread extends Thread {
private Socket s;
public RecieveThread(Socket s) {
this.s = s;
}
public void run() {
try {
// 接收对方输入的内容
InputStream is = s.getInputStream();
DataInputStream dis = new DataInputStream(is);
while (true) {
String msg = dis.readUTF();
System.out.println(msg);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}创建SendThread.java
import java.io.*;
import java.net.Socket;
import java.util.Scanner;
public class SendThread extends Thread {
private Socket s;
public SendThread(Socket s) {
this.s = s;
}
public void run() {
try {
// 获取输入的内容
OutputStream os = s.getOutputStream();
DataOutputStream dos = new DataOutputStream(os);
while (true) {
Scanner sc = new Scanner(System.in);
String str = sc.next();
dos.writeUTF(str);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
