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NetDemo.java
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package code_04_network;
import java.net.InetAddress;
import java.net.UnknownHostException;
/**
* Created by 18351 on 2019/1/5.
*/
public class NetDemo {
public static void main(String[] args) throws UnknownHostException {
// public static InetAddress getByName(String host)
InetAddress address = InetAddress.getByName("LAPTOP-D9966H06");
//InetAddress address = InetAddress.getByName("223.3.108.211");
//InetAddress address = InetAddress.getByName("192.168.2.1");
// 获取两个东西：主机名，IP地址
// public String getHostName()
String name = address.getHostName();
// public String getHostAddress()
String ip = address.getHostAddress();
System.out.println(name + "---" + ip);
}
}