Android 時間管理工具自測不錯

  工作中寫的時間管理工具類，用起來還不錯記錄一下，以後看看能不能用上

public class TimeUtils {


    /**
     * 英文簡寫如：12:01
     */
    public static final SimpleDateFormat DEFAULT_DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    public static final SimpleDateFormat DATE_FORMAT_YYMMDDHHMM = new SimpleDateFormat("yyyy-MM-dd HH:mm");
 public static final SimpleDateFormat DATE_FORMAT_DATE    = new SimpleDateFormat("yyyy-MM-dd");
    public static final SimpleDateFormat DATE_FORMAT_HHMM    = new SimpleDateFormat("HH:mm");
    public static final SimpleDateFormat DATE_FORMAT_HHMMSS = new SimpleDateFormat("HH:mm:ss");

   private TimeUtils() {
        throw new AssertionError();
    }

    /**
     * long time to string
     * 
     * @param timeInMillis timeInMillis
     * @param dateFormat   dateFormat
     * @return String
     */
    public static String getTime(long timeInMillis, SimpleDateFormat dateFormat) {
        return dateFormat.format(new Date(timeInMillis));
    }

 /**
     * long time to string, format is {@link #DEFAULT_DATE_FORMAT}
     * 
     * @param timeInMillis time
     * @return String
     */
    public static String getTime(long timeInMillis) {
        return getTime(timeInMillis, DEFAULT_DATE_FORMAT);
    }

  /**
     * get current time in milliseconds
     * 
     * @return long
     */
    public static long getCurrentTimeInLong() {
        return System.currentTimeMillis();
    }

    /**
     * get current time in milliseconds, format is {@link #DEFAULT_DATE_FORMAT}
     * 
     * @return  String
     */
    public static String getCurrentTimeInString() {
        return getTime(getCurrentTimeInLong());
    }

 /**
     * get current time in milliseconds
     * 
     * @param dateFormat    dateFormat
     * @return  String
     */
    public static String getCurrentTimeInString(SimpleDateFormat dateFormat) {

        return getTime(getCurrentTimeInLong(), dateFormat);
    }
}