lookForPorts2.java Source code

Introduction

Here is the source code for lookForPorts2.java

Source

import java.net.*;
import java.io.*;

public class lookForPorts2 {

    public static void main(String[] args) {

        Socket theSocket;
        String host = "localhost";

        if (args.length > 0) {
            host = args[0];
        }

        try {
            InetAddress theAddress = InetAddress.getByName(host);
            for (int i = 1024; i < 65536; i++) {
                try {
                    System.out.println("Looking for port " + i);
                    theSocket = new Socket(theAddress, i);
                    System.out.println("There is a server on port " + i + " of " + host);
                } catch (IOException e) {
                    // must not be a server on this port
                }
            }
        } catch (UnknownHostException e) {
            System.err.println(e);
        }
    }
}