e06884384d6a001c1e36e6e62da4b12f

这是我自己照着书上敲的

/*
 * Created on 2007-9-24
 *
 * TODO To change the template for this generated file go to
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 */
import java.io.*;
import java.net.*;
/**
 * @author Administrator
 *
 * TODO To change the template for this generated type comment go to
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 */
public class InetAddressDemo 
{
	public static void main(String args[]) throws IOException
	{
		if(args.length!=1)
		{
			System.out.println("Usage: java InetAddressDemo<hostname>"+args.length);
			return;
		}
		InetAddress address=InetAddress.getByName(args[0]);
		System.out.println("输入的主机名称为："+args[0]);
		String strName=address.getHostName();
		System.out.println("程序获取的主机名称是："+strName);
	}
}