package?com.hilary.ping;

/**
?*?@author?一雙拖鞋一夏天
?*
?*/
public?class?IPUnit?{
	/**
	?*?把ip地址換成長整形
	?*?@param?ip?點分的十進制IP地址
	?*?@return?長整形IP
	?*/
	public?static?long?ip2long（String?ip）?{
		String[]?ips?=?ip.split（“[.]“）;
		return?16777216L?*?Long.parseLong（ips[0]）?+?65536L?*?Long.parseLong（ips[1]）?+?256?*?Long.parseLong（ips[2]）
				+?Long.parseLong（ips[3]）;
	}

	/**
	?*?@param?ip?長整形IP
	?*?@return?點分十進制ip
	?*/
	public?static?String?long2ip（long?ip）?{
		long?mask[]?=?{?0x000000FF?0x0000FF00?0x00FF0000?0xFF000000?};
		long?num?=?0;
		StringBuffer?ipInfo?=?new?StringBuffer（）;
		for?（int?i?=?0;?i?			num?=?（ip?&?mask[i]）?>>?（i?*?8）;
			if?（i?>?0）
				ipInfo.insert（0?“.“）;
			ipInfo.insert（0?Long.toString（num?10））;
		}
		return?ipInfo.toString（）;
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-07-07?22:27??Ping\
?????文件?????????301??2015-12-27?22:48??Ping\.classpath
?????文件?????????380??2015-12-27?22:48??Ping\.project
?????目錄???????????0??2017-07-07?22:27??Ping\.settings\
?????文件?????????598??2015-12-27?22:48??Ping\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2018-12-26?13:34??Ping\bin\
?????目錄???????????0??2017-07-07?22:27??Ping\src\
?????目錄???????????0??2017-07-07?22:27??Ping\src\com\
?????目錄???????????0??2017-07-07?22:27??Ping\src\com\hilary\
?????目錄???????????0??2017-07-07?22:27??Ping\src\com\hilary\ping\
?????文件?????????843??2015-12-29?20:04??Ping\src\com\hilary\ping\IPUnit.java
?????文件?????????143??2015-12-28?00:04??Ping\src\com\hilary\ping\Main.java
?????文件????????3904??2015-12-30?01:10??Ping\src\com\hilary\ping\Mainframe.java
?????文件????????1477??2015-12-30?21:50??Ping\src\com\hilary\ping\Ping.java