Java判断日期是否是本日，本周，本月

最新推荐文章于 2024-03-25 08:57:12 发布

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最新推荐文章于 2024-03-25 08:57:12 发布

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本文链接：https://blog.youkuaiyun.com/qq_36850813/article/details/82813307

本文介绍了一系列用于日期操作的实用Java方法，包括判断指定日期是否为今天、本周或本月，以及如何将时间戳转换为不同格式的日期字符串。这些方法使用了Java的Calendar和SimpleDateFormat类。

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//判断选择的日期是否是今天
    public static boolean isToday(long time) {
        return isThisTime(time, "yyyy-MM-dd");
    }

    //判断选择的日期是否是本周
    public static boolean isThisWeek(long time) {
        Calendar calendar = Calendar.getInstance();
        int currentWeek = calendar.get(Calendar.WEEK_OF_YEAR);
        calendar.setTime(new Date(time));
        int paramWeek = calendar.get(Calendar.WEEK_OF_YEAR);
        if (paramWeek == currentWeek) {
            return true;
        }
        return false;
    }


    //判断选择的日期是否是本月
    public static boolean isThisMonth(long time) {
        return isThisTime(time, "yyyy-MM");
    }

    public static boolean isThisTime(long time, String pattern) {
        Date date = new Date(time);
        SimpleDateFormat sdf = new SimpleDateFormat(pattern);
        String param = sdf.format(date);//参数时间
        String now = sdf.format(new Date());//当前时间
        if (param.equals(now)) {
            return true;
        }
        return false;
    }

    @Test
    public void testTime() {
        isToday(1416360654000L);
        isThisMonth(1416360654000L);
        isThisWeek(1416360654000L);
    }

 public static String getNotifDateStrEnglish(long timeStamp) {
        String result = "";
        try {
            SimpleDateFormat sf1 = new SimpleDateFormat("EEEE,MMMM dd,yyyy h:m");
            result = sf1.format(new Date(timeStamp * 1000L));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    public static String getNotifDateStr(long timeStamp) {
        String result = "";
        try {
            SimpleDateFormat sf1 = new SimpleDateFormat("dd/MM/yyyy hh:mm a");
            result = sf1.format(new Date(timeStamp * 1000L));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    public static String getNotifDateSms(long timeStamp) {
        String result = "";
        try {
            SimpleDateFormat sf1 = new SimpleDateFormat("hh:mm a");
            result = sf1.format(new Date(timeStamp * 1000L));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }