java怎么实现DNS逆向解析

import java.net.InetAddress;
import java.net.UnknownHostException;

InetAddress address;
try {
    address = InetAddress.getByName("IP地址");
} catch (UnknownHostException e) {
    e.printStackTrace();
    return;
}

String hostName = address.getHostName();
System.out.println("逆向解析结果：" + hostName);

import java.net.InetAddress;
import java.net.UnknownHostException;

public class DNSReverseLookup {
    public static void main(String[] args) {
        InetAddress address;
        try {
            address = InetAddress.getByName("IP地址");
        } catch (UnknownHostException e) {
            e.printStackTrace();
            return;
        }

        String hostName = address.getHostName();
        System.out.println("逆向解析结果：" + hostName);
    }
}