网络编程（套接字）------SocketAddress代表IP地址和端口的类

代码：
package cn.tedu.net.address;

import java.net.InetSocketAddress;

public class InetSocketAddressDemo {
public static void main(String[] args) {
//创建代表IP地址和端口的类的对象
InetSocketAddress inetSocketAddress=new InetSocketAddress
(“localhost”,8090);
//localhost映射成的IP地址127.0.0.1
//127.0.0.1永远指向本地
//返回IP地址、主机名（计算机名称）、端口号
System.out.println(inetSocketAddress.getAddress());
System.out.println(inetSocketAddress.getHostName());
System.out.println(inetSocketAddress.getPort());
}
}
输出：
localhost/127.0.0.1
localhost
8090

代码图：