根据主机字符串获得ip

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;

/*
 * write by 1xiu 
 * 2011-12-23
 * just for test
 * */
public class getIP {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub

		String hostname;
		//输入
		BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
		System.out.print("\n");
		System.out.print("Host name:");
		//读取输入的主机名
		hostname = input.readLine();
		try {
			
			InetAddress ipAddress = InetAddress.getByName(hostname);
			System.out.print("Ip :"+ipAddress.getHostAddress());
		} catch (Exception e) {
			// TODO: handle exception
			System.out.print("can not find the ip for:"+hostname);
		}
	}

}