如何得到本周的周一和周七的日期？

Question

据说，java 基础类中有一个叫Calendar 的东东……

Answer 1

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Answer 2

获得当天的DATE日期
Calendar.getInstance().get(Calendar.DAY_OF_MONTH)今天是星期几 
Calendar.getInstance().get(Calendar.DAY_OF_WEEK)然后自己判断  后面没问题了吧~！ 接分

Answer 3

上月最后一天用本月第一天-1天即可Calendar的时间类型加减功能特别强大, 好好看看

Answer 4

Calendar.getInstance().get(int filed)..自己去设置........接分

Answer 5

/**
     * Get the date of monday in this week
     * 
     * @return yyyy-MM-dd
     */
    public static String getMondayOfThisWeek() {
        String strTemp = "";
        Calendar c = Calendar.getInstance();
        int dayofweek = c.get(Calendar.DAY_OF_WEEK) - 1;
        if (dayofweek == 0)
            dayofweek = 7;
        c.add(Calendar.DATE, -dayofweek + 1);
        strTemp = c.get(1) + "-";
        if (c.get(2) + 1 < 10)
            strTemp += "0";
        strTemp = strTemp + (c.get(2) + 1) + "-";
        if (c.get(5) < 10)
            strTemp += "0";
        strTemp += c.get(5);
        return strTemp;
    }    /**
     * Get the date of sunday in this week
     * 
     * @return yyyy-MM-dd
     */
    public static String getSundayOfThisWeek() {
        String strTemp = "";
        Calendar c = Calendar.getInstance();
        int dayofweek = c.get(Calendar.DAY_OF_WEEK) - 1;
        if (dayofweek == 0)
            dayofweek = 7;
        c.add(Calendar.DATE, -dayofweek + 7);
        strTemp = c.get(1) + "-";
        if (c.get(2) + 1 < 10)
            strTemp += "0";
        strTemp = strTemp + (c.get(2) + 1) + "-";
        if (c.get(5) < 10)
            strTemp += "0";
        strTemp += c.get(5);
        return strTemp;
    }

Answer 6

/**
 * Get the date of monday in this week
 * 
 * @return yyyy-MM-dd
 */
public static String getMondayOfThisWeek() {
Calendar c = Calendar.getInstance();
int dayofweek = c.get(Calendar.DAY_OF_WEEK) - 1;
if (dayofweek == 0)
dayofweek = 7;
c.add(Calendar.DATE, -dayofweek + 1);
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
return sdf.format(c.getTime());
} /**
 * Get the date of sunday in this week
 * 
 * @return yyyy-MM-dd
 */
public static String getSundayOfThisWeek() {
Calendar c = Calendar.getInstance();
int dayofweek = c.get(Calendar.DAY_OF_WEEK) - 1;
if (dayofweek == 0)
dayofweek = 7;
c.add(Calendar.DATE, -dayofweek + 7);
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
return sdf.format(c.getTime());
}

Answer 7

Calendar.getInstance().get(Calendar.DAY_OF_MONTH)//get Date
Calendar.getInstance().get(Calendar.DAY_OF_WEEK)//get week