小老虎的开发记述【九】Java从当前时间获取到上个月&获取到上周

    Calendar c = Calendar.getInstance();
    c.add(Calendar.MONTH, -1);
    System.out.println("上个月是："+new SimpleDateFormat("yyyy-MM-dd").format(c.getTime()));

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    Calendar c = Calendar.getInstance();
    c.add(Calendar.WEEK_OF_MONTH, -1);
    System.out.println("上周是："+new SimpleDateFormat("yyyy-MM-dd").format(c.getTime()));