| | |
| | | package com.ycl.utils; |
| | | |
| | | import org.apache.commons.lang3.time.DateFormatUtils; |
| | | import org.glassfish.jaxb.core.v2.TODO; |
| | | |
| | | import javax.annotation.Nullable; |
| | | import java.lang.management.ManagementFactory; |
| | |
| | | public static String getMouthStart(@Nullable Date date) { |
| | | SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); |
| | | Calendar c = Calendar.getInstance(); |
| | | c.add(Calendar.MONTH, 0); |
| | | if (date != null) { |
| | | c.setTime(date); // 如果date不为null,则设置Calendar的日期为date |
| | | } |
| | | c.set(Calendar.DAY_OF_MONTH,1); |
| | | return df.format(c.getTime()); |
| | | } |
| | |
| | | public static String getMouthEnd(@Nullable Date date) { |
| | | SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); |
| | | Calendar c = Calendar.getInstance(); |
| | | if (date != null) { |
| | | c.setTime(date); // 如果date不为null,则设置Calendar的日期为date |
| | | } |
| | | c.set(Calendar.DAY_OF_MONTH, c.getActualMaximum(Calendar.DAY_OF_MONTH)); |
| | | return df.format(c.getTime()); |
| | | } |
| | |
| | | Date date = calendar.getTime(); |
| | | return date; |
| | | } |
| | | public static Integer getDayOfMonth(Date date) { |
| | | // 创建一个Calendar对象并设置为当前日期和时间 |
| | | Calendar calendar = Calendar.getInstance(); |
| | | calendar.setTime(date); |
| | | // 获取当前日期是当月中的第几天 |
| | | return calendar.get(Calendar.DAY_OF_MONTH); |
| | | } |
| | | } |