编写Java程序，根据提供的 IP 地址，获取主机名称和域名
最编程
2024-01-02 08:29:11
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import java.net.InetAddress;
import java.net.UnknownHostException;
public class GetHostNameByIpAddress {
public static void main(String[] args) throws UnknownHostException {
InetAddress localHost = InetAddress.getLocalHost();
//保存IP地址
String ipAddress = "172.20.36.17";
// String ipAddress = localHost.toString();
// System.out.println(ipAddress);
//根据符号“.”将IP地址分割为一个字符串数组
String[] ipArr = ipAddress.split("\\.");
//用来保存IP地址的byte数组
byte[] ipByteArr = new byte[ipArr.length];
for (int i = 0; i < ipArr.length; i++) {
//将字符串转成整数
int m = Integer.parseInt(ipArr[i]);
//将int类型的数字转成byte类型
ipByteArr[i] = (byte)m;
}
InetAddress inetAddress = InetAddress.getByAddress(ipByteArr);
}
}