public class ProgramTimer { //程序的开始时间 private long startTime; //程序的结束时间 private long endTime; public ProgramTimer () { this.startTime = 0; this.endTime = 0; } /** * 开始记录程序运行时间 * * @param startTime Long Integer */ public void start () { this.startTime = System.currentTimeMillis(); } /** * 返回程序的运行时间 * * @return String */ public String runningTime () { this.endTime = System.currentTimeMillis(); return formatTime(endTime-startTime); } /** * 对标准时的转换 * * @param ms Long * @return 程序总用时:X天X小时X分X秒X毫秒 */ public static String formatTime(Long ms) { Integer ss = 1000; Integer mi = ss * 60; Integer hh = mi * 60; Integer dd = hh * 24; Long day = ms / dd; Long hour = (ms - day * dd) / hh; Long minute = (ms - day * dd - hour * hh) / mi; Long second = (ms - day * dd - hour * hh - minute * mi) / ss; Long milliSecond = ms - day * dd - hour * hh - minute * mi - second * ss; StringBuffer sb = new StringBuffer(); sb.append("程序总用时："); if(day > 0) { sb.append(day+"天"); } if(hour > 0) { sb.append(hour+"小时"); } if(minute > 0) { sb.append(minute+"分"); } if(second > 0) { sb.append(second+"秒"); } if(milliSecond > 0) { sb.append(milliSecond+"毫秒"); } return sb.toString(); } }