java 判断端口是否被占用_java检测端口是否被占用详解

Java可以通过Socket类来检测端口是否被占用：

import java.net.*;

import java.io.*;

public class Main {

public static void main(String[] args) {

Socket Skt;

String host = "localhost";

if (args.length gt; 0) {

host = args[0];

}

for (int i = 0; i < 1024; i++) {

try {

System.out.println("Looking for "+ i);

Skt = new Socket(host, i);

System.out.println("There is a server on port "

+ i + " of " + host);

}

catch (UnknownHostException e) {

System.out.println("Exception occured"+ e);

break;

}

catch (IOException e) {

}

}

}

}