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  • java获取当前年、半年、季度、月、日、小时 开始结束时间等

    转载:http://www.cnblogs.com/GYoungBean/archive/2012/10/31/2748219.html

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

    /**
    * 获取 当前年、半年、季度、月、日、小时 开始结束时间
    */

    private final SimpleDateFormat shortSdf;
    private final SimpleDateFormat longHourSdf;
    private final SimpleDateFormat longSdf;

    public RemindDateUtils(){
    this.shortSdf = new SimpleDateFormat("yyyy-MM-dd");
    this.longHourSdf = new SimpleDateFormat("yyyy-MM-dd HH");
    this.longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    }

    /**
    * 获得本周的第一天,周一
    *
    * @return
    */
    public Date getCurrentWeekDayStartTime() {
    Calendar c = Calendar.getInstance();
    try {
    int weekday = c.get(Calendar.DAY_OF_WEEK) - 2;
    c.add(Calendar.DATE, -weekday);
    c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00"));
    } catch (Exception e) {
    e.printStackTrace();
    }
    return c.getTime();
    }

    /**
    * 获得本周的最后一天,周日
    *
    * @return
    */
    public Date getCurrentWeekDayEndTime() {
    Calendar c = Calendar.getInstance();
    try {
    int weekday = c.get(Calendar.DAY_OF_WEEK);
    c.add(Calendar.DATE, 8 - weekday);
    c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"));
    } catch (Exception e) {
    e.printStackTrace();
    }
    return c.getTime();
    }

    /**
    * 获得本天的开始时间,即2012-01-01 00:00:00
    *
    * @return
    */
    public Date getCurrentDayStartTime() {
    Date now = new Date();
    try {
    now = shortSdf.parse(shortSdf.format(now));
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    /**
    * 获得本天的结束时间,即2012-01-01 23:59:59
    *
    * @return
    */
    public Date getCurrentDayEndTime() {
    Date now = new Date();
    try {
    now = longSdf.parse(shortSdf.format(now) + " 23:59:59");
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    /**
    * 获得本小时的开始时间,即2012-01-01 23:59:59
    *
    * @return
    */
    public Date getCurrentHourStartTime() {
    Date now = new Date();
    try {
    now = longHourSdf.parse(longHourSdf.format(now));
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    /**
    * 获得本小时的结束时间,即2012-01-01 23:59:59
    *
    * @return
    */
    public Date getCurrentHourEndTime() {
    Date now = new Date();
    try {
    now = longSdf.parse(longHourSdf.format(now) + ":59:59");
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    /**
    * 获得本月的开始时间,即2012-01-01 00:00:00
    *
    * @return
    */
    public Date getCurrentMonthStartTime() {
    Calendar c = Calendar.getInstance();
    Date now = null;
    try {
    c.set(Calendar.DATE, 1);
    now = shortSdf.parse(shortSdf.format(c.getTime()));
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    /**
    * 当前月的结束时间,即2012-01-31 23:59:59
    *
    * @return
    */
    public Date getCurrentMonthEndTime() {
    Calendar c = Calendar.getInstance();
    Date now = null;
    try {
    c.set(Calendar.DATE, 1);
    c.add(Calendar.MONTH, 1);
    c.add(Calendar.DATE, -1);
    now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    /**
    * 当前年的开始时间,即2012-01-01 00:00:00
    *
    * @return
    */
    public Date getCurrentYearStartTime() {
    Calendar c = Calendar.getInstance();
    Date now = null;
    try {
    c.set(Calendar.MONTH, 0);
    c.set(Calendar.DATE, 1);
    now = shortSdf.parse(shortSdf.format(c.getTime()));
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    /**
    * 当前年的结束时间,即2012-12-31 23:59:59
    *
    * @return
    */
    public Date getCurrentYearEndTime() {
    Calendar c = Calendar.getInstance();
    Date now = null;
    try {
    c.set(Calendar.MONTH, 11);
    c.set(Calendar.DATE, 31);
    now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    /**
    * 当前季度的开始时间,即2012-01-1 00:00:00
    *
    * @return
    */
    public Date getCurrentQuarterStartTime() {
    Calendar c = Calendar.getInstance();
    int currentMonth = c.get(Calendar.MONTH) + 1;
    Date now = null;
    try {
    if (currentMonth >= 1 && currentMonth <= 3)
    c.set(Calendar.MONTH, 0);
    else if (currentMonth >= 4 && currentMonth <= 6)
    c.set(Calendar.MONTH, 3);
    else if (currentMonth >= 7 && currentMonth <= 9)
    c.set(Calendar.MONTH, 4);
    else if (currentMonth >= 10 && currentMonth <= 12)
    c.set(Calendar.MONTH, 9);
    c.set(Calendar.DATE, 1);
    now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    /**
    * 当前季度的结束时间,即2012-03-31 23:59:59
    *
    * @return
    */
    public Date getCurrentQuarterEndTime() {
    Calendar c = Calendar.getInstance();
    int currentMonth = c.get(Calendar.MONTH) + 1;
    Date now = null;
    try {
    if (currentMonth >= 1 && currentMonth <= 3) {
    c.set(Calendar.MONTH, 2);
    c.set(Calendar.DATE, 31);
    } else if (currentMonth >= 4 && currentMonth <= 6) {
    c.set(Calendar.MONTH, 5);
    c.set(Calendar.DATE, 30);
    } else if (currentMonth >= 7 && currentMonth <= 9) {
    c.set(Calendar.MONTH, 8);
    c.set(Calendar.DATE, 30);
    } else if (currentMonth >= 10 && currentMonth <= 12) {
    c.set(Calendar.MONTH, 11);
    c.set(Calendar.DATE, 31);
    }
    now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }
    /**
    * 获取前/后半年的开始时间
    * @return
    */
    public Date getHalfYearStartTime(){
    Calendar c = Calendar.getInstance();
    int currentMonth = c.get(Calendar.MONTH) + 1;
    Date now = null;
    try {
    if (currentMonth >= 1 && currentMonth <= 6){
    c.set(Calendar.MONTH, 0);
    }else if (currentMonth >= 7 && currentMonth <= 12){
    c.set(Calendar.MONTH, 6);
    }
    c.set(Calendar.DATE, 1);
    now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;

    }
    /**
    * 获取前/后半年的结束时间
    * @return
    */
    public Date getHalfYearEndTime(){
    Calendar c = Calendar.getInstance();
    int currentMonth = c.get(Calendar.MONTH) + 1;
    Date now = null;
    try {
    if (currentMonth >= 1 && currentMonth <= 6){
    c.set(Calendar.MONTH, 5);
    c.set(Calendar.DATE, 30);
    }else if (currentMonth >= 7 && currentMonth <= 12){
    c.set(Calendar.MONTH, 11);
    c.set(Calendar.DATE, 31);
    }
    now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
    } catch (Exception e) {
    e.printStackTrace();
    }
    return now;
    }

    }

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  • 原文地址:https://www.cnblogs.com/gwq369/p/5382367.html
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