Java代码如何使用IP地址获取主机名呢?

IP地址获取主机名

使用InetAddress.getByName方法即可获取主机名

package com.java265.other;
import java.net.InetAddress;
import java.net.UnknownHostException;

public class IpGetHostName {
	/**
	 * IP地址获取主机名
	 * @throws UnknownHostException
	 */
	public static void main(String[] args) throws UnknownHostException {
		InetAddress addr = InetAddress.getByName("8.8.8.8");
		String host = addr.getHostName();
		System.out.println(host);
	}
}

----运行以上代码，将输出以下信息---
dns.google