java获取url的主域名 java通过域名获取ip地址

package myk;

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

public class GetIp {

	/**
	 * java根据域名获取ip地址
	 */
	public static void main(String[] args) {
		
		try {
			InetAddress cumt = InetAddress.getByName("www.baidu.com");
			System.out.println(cumt);
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

}