JAVA的端口

公有端口：0~1023

HTTP:80

HTTPS:443

FTP:21

Telent:23

程序注册端口：1024~49151

tomcat:8080

mysql:3306

orcal:1521

动态或自由端口：49152~65535

package 端口;

import java.net.InetSocketAddress;

public class TestInetSocketAddress {
    public static void main(String[] args) {
        InetSocketAddress inetSocketAddress = new InetSocketAddress("localhost", 443);
        System.out.println(inetSocketAddress);
        System.out.println(inetSocketAddress.getAddress());
        System.out.println(inetSocketAddress.getHostName());
        System.out.println(inetSocketAddress.getPort());
        System.out.println(inetSocketAddress.getHostString());
    }
}