java-TCP程序设计基础

1.InetAddress类

public class demo1 {

@SuppressWarnings("static-access")
public static void main(String[] args) {

InetAddress ip;     //创建InetAddress对象
try {
ip = InetAddress.getLocalHost();    //实例化对象
System.out.println("获取此ip地址的本机名："+ip.getHostName());
System.out.println("获取本机ip地址："+ip.getHostAddress());
System.out.println("获取本机InetAddress对象："+ip.getLocalHost());
System.out.println("获取与Host相对应的InetAddress对象："+ip.getByName(null));
} catch (UnknownHostException e) {
// TODO: handle UnknownHostException
e.printStackTrace();
}
}
}

输出结果：
获取此ip地址的本机名：hyty
获取本机ip地址：192.168.43.160
获取本机InetAddress对象：hyty/192.168.43.160
获取与Host相对应的InetAddress对象：localhost/127.0.0.1