TimeUtils.java

package com.ouwenjie.note.utils;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * 时间相关工具栏
 * Created by 文杰 on 2015/3/31.
 */
public class TimeUtils {

    public static final SimpleDateFormat DEFAULT_TIME_FORMAT = new SimpleDateFormat("HH:mm:ss");

    public static final SimpleDateFormat DEFAULT_DATE_FORMAT= new SimpleDateFormat("yyyy-MM-dd");

    public static final SimpleDateFormat DEFAULT_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    /**
     * long time to string
     *
     * @param timeInMillis
     * @param dateFormat
     * @return
     */
    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
     * @return
     */
    public static String getTime(long timeInMillis) {
        return getTime(timeInMillis, DEFAULT_FORMAT);
    }

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

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

    /**
     * get current time in milliseconds
     *
     * @return
     */
    public static String getCurrentTimeInString(SimpleDateFormat dateFormat) {
        return getTime(getCurrentTimeInLong(), dateFormat);
    }
}