学步园

public class TimeStringFormat {
	/**
	 * 
	 * @Title:  stringToTime1
	 * @Description:  给定规定格式的字符串转换成秒
	 * @return long 返回类型 
	 * @throws
	 */
	public static long stringToTime1(String str) {
		String[] strArr = str.split(":");
		int result = 0;
		int i = 3600;
		
		for(String st : strArr) {
			result += Integer.parseInt(st) * i;
			i = i/60;
		}
		return Long.parseLong(result+"");
	}
	
	/**
	 * 
	 * @Title:  stringToTime2
	 * @Description:  给定规定格式的字符串转换成秒
	 * @return long 返回类型 
	 * @throws
	 */
	public static long stringToTime2(String str) {
		int hour,min,second;
		hour = Integer.parseInt(str.substring(0, str.indexOf(":")));
		min = Integer.parseInt(str.substring(str.indexOf(":") + 1, str.lastIndexOf(":")));
		second = Integer.parseInt(str.substring(str.lastIndexOf(":") + 1));
		return Long.parseLong(hour*3600 + min*60 + second + "");
	}
	
	/**
	 * 
	 * @Title:  timeToString
	 * @Description:  给定秒 转换成指定的字符格式
	 * @return String 返回类型 
	 * @throws
	 */
	public static String timeToString(Long time) {
		int hour,min,second;
		String hourStr,minStr,secondStr;
		hourStr = minStr = secondStr = "";
		hour = Integer.parseInt(time/3600 + "");
		min = Integer.parseInt((time - hour*3600)/60 + "");
		second = Integer.parseInt(time - hour*3600 - min*60 +"");
		hourStr = hour < 10 ? "0" + hour : hour + "";
		minStr = min < 10 ? "0" + min : min + "";
		secondStr = second < 10 ? "0" + second : second + "";
		return hourStr + ":" + minStr + ":" + secondStr;
	}
	
	/**
	 * 
	 * @Title:  
	 * @Description:  测试方法
	 * @return void 返回类型 
	 * @throws
	 */
	public static void main(String[] args) {
		System.out.println(stringToTime1("05:06:23"));
		System.out.println(stringToTime2("05:06:23"));
		System.out.println(timeToString(new Long(18383)));
	}
}