Java实现的耗时统计类-可用于测试程序耗时

package time.consume; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public class countConsumeTime { // 起始时间 public Date startTime = null; // 终止时间 public Date endTime = null; // 消耗时间 public long timeSpan = 0; // 设置日期格式 public SimpleDateFormat dateFormat = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss"); // 获取时间格式 public SimpleDateFormat getDateFormat() { return dateFormat; } // 设置时间格式 public void setDateFormat(SimpleDateFormat df) { this.dateFormat = df; } // 获取时间跨度 毫秒计 public long getTimeSpan() { timeSpan = endTime.getTime() - startTime.getTime(); return timeSpan; } // 时间转换成时分秒 public String getTimeSpanByFormat() { String formatTimeSpan = "0秒"; long temp = timeSpan/1000; String format; Object[] array; Integer hours = (int) (temp / (60 * 60)); Integer minutes = (int) (temp / 60 - hours * 60); Integer seconds = (int) (temp - minutes * 60 - hours * 60 * 60); if (hours > 0) { format = "%1$,d时%2$,d分%3$,d秒"; array = new Object[] { hours, minutes, seconds }; } else if (minutes > 0) { format = "%1$,d分%2$,d秒"; array = new Object[] { minutes, seconds }; } else { format = "%1$,d秒"; array = new Object[] { seconds }; } formatTimeSpan = String.format(format, array); return formatTimeSpan; } public Date getStartTime() { return startTime; } // 当前时间 public void setStartTimeByCurrentTime() { this.startTime = new Date(); } // 指定时间 public void setStartTime(Date startTime) { this.startTime = startTime; } public Date getEndTime() { return endTime; } // 当前时间 public void setEndTimeByCurrentTime() { this.endTime = new Date(); } // 指定时间 public void setEndTime(Date endTime) { this.endTime = endTime; } public static void main(String[] args) { countConsumeTime countConsumeTime = new countConsumeTime(); Date starttime = null; try { starttime = countConsumeTime.getDateFormat().parse( "2014-10-15 19:03:00"); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } countConsumeTime.setStartTime(starttime); countConsumeTime.setEndTimeByCurrentTime(); System.out.println(countConsumeTime.getTimeSpan()); System.out.println(countConsumeTime.getTimeSpanByFormat()); } }