java判斷ip和端口是否通信正常

package com.client;

import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;

public class TestIpPort {

    public static void main(String[] args) {
        System.out.println(isHostConnectable("10.1.11.10", 16181));
    }
    
    public static boolean isHostConnectable(String host, int port) {
        Socket socket = new Socket();
        try {
            socket.connect(new InetSocketAddress(host, port));
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        } finally {
            try {
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return true;
    }
    
    public static boolean isHostReachable(String host, Integer timeOut) {
        try {
            return InetAddress.getByName(host).isReachable(timeOut);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return false;
    }
}