取得当前日期相对应的月初，月末，季初，季末，年初，年末

获取当前日期与时间相关日期

最新推荐文章于 2023-12-15 15:32:57 发布

转载最新推荐文章于 2023-12-15 15:32:57 发布 · 1.4k 阅读

文章标签：

#string #calendar #class #blog

本文提供了一个Java类，用于获取当前日期的多种日期范围，包括当前日期、当前月份的初末、当前季度的初末、当前年的初末及判断闰年。使用简单，通过调用相应的方法即可获取所需的日期字符串。

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package vivi.test;

import java.util.Calendar;
/**
  *
  * 描述:此类用于取得当前日期相对应的月初，月末，季初，季末，年初，年末，返回值均为String字符串
  *      1、得到当前日期         today()
  *      2、得到当前月份月初      thisMonth()
  *      3、得到当前月份月底      thisMonthEnd()
  *      4、得到当前季度季初      thisSeason()
  *      5、得到当前季度季末      thisSeasonEnd()
  *      6、得到当前年份年初      thisYear()
  *      7、得到当前年份年底      thisYearEnd()
  *      8、判断输入年份是否为闰年 leapYear
  * 注意事项:  日期格式为：xxxx-yy-zz (eg: 2007-12-05)
  * 实例:
  * @author pure
  */
public class Test {
  private int x;                  // 日期属性：年
  private int y;                  // 日期属性：月
  private int z;                  // 日期属性：日
  private Calendar localTime;     // 当前日期

  public Test() {
      localTime = Calendar.getInstance();
  }

  public static void main(String[] args){
    Test test = new Test();
    test.today();
  }
  /**
   * 功能：得到当前日期格式为：xxxx-yy-zz (eg: 2007-12-05)
   * @return String
   * @author pure
   */
  public String today() {
    String strY = null;
    String strZ = null;
    x = localTime.get(Calendar.YEAR);
    y = localTime.get(Calendar.MONTH) + 1;
    z = localTime.get(Calendar.DATE);
    strY = y >= 10 ? String.valueOf(y) : ("0" + y);
    strZ = z >= 10 ? String.valueOf(z) : ("0" + z);
    return x + "-" + strY + "-" + strZ;
  }
  /**
    * 功能：得到当前月份月初格式为：xxxx-yy-zz (eg: 2007-12-01)
    * @return String
    * @author pure
    */
  public String thisMonth() {
    String strY = null;
    x = localTime.get(Calendar.YEAR);
    y = localTime.get(Calendar.MONTH) + 1;
    strY = y >= 10 ? String.valueOf(y) : ("0" + y);return x + "-" + strY + "-01";
  }
  /**
    * 功能：得到当前月份月底格式为：xxxx-yy-zz (eg: 2007-12-31)
    * @return String
    * @author pure
    **/
  public String thisMonthEnd() {
    String strY = null;
    String strZ = null;
    boolean leap = false;
    x = localTime.get(Calendar.YEAR);
    y = localTime.get(Calendar.MONTH) + 1;
    if (y == 1 || y == 3 || y == 5 || y == 7 || y == 8 || y == 10 || y == 12) {
      strZ = "31";
    }
    if (y == 4 || y == 6 || y == 9 || y == 11) {
      strZ = "30";
    }
    if (y == 2) {
      leap = leapYear(x);
      if (leap) {
        strZ = "29";
      }else {
        strZ = "28";
      }
    }
    strY = y >= 10 ? String.valueOf(y) : ("0" + y);
    return x + "-" + strY + "-" + strZ;
  }

/**
 * 功能：得到当前季度季初格式为：xxxx-yy-zz (eg: 2007-10-01) 
 * @return String
 * @author pure
 */
 public String thisSeason() {
 String dateString = "";
 x = localTime.get(Calendar.YEAR);
 y = localTime.get(Calendar.MONTH) + 1;
 if (y >= 1 && y <= 3) {
 dateString = x + "-" + "01" + "-" + "01";
 }
 if (y >= 4 && y <= 6) {
 dateString = x + "-" + "04" + "-" + "01";
 }
 if (y >= 7 && y <= 9) {
 dateString = x + "-" + "07" + "-" + "01";
 }
 if (y >= 10 && y <= 12) {
 dateString = x + "-" + "10" + "-" + "01";
 }
 return dateString;
 }

/**
 * 功能：得到当前季度季末格式为：xxxx-yy-zz (eg: 2007-12-31) 
 * @return String
 * @author pure
 */
 public String thisSeasonEnd() {
 String dateString = "";
 x = localTime.get(Calendar.YEAR);
 y = localTime.get(Calendar.MONTH) + 1;
 if (y >= 1 && y <= 3) {
 dateString = x + "-" + "03" + "-" + "31";
 }
 if (y >= 4 && y <= 6) {
 dateString = x + "-" + "06" + "-" + "30";
 }
 if (y >= 7 && y <= 9) {
 dateString = x + "-" + "09" + "-" + "30";
 }
 if (y >= 10 && y <= 12) {
 dateString = x + "-" + "12" + "-" + "31";
 }
 return dateString;
 }

/**
 * 功能：得到当前年份年初格式为：xxxx-yy-zz (eg: 2007-01-01) 
 * @return String
 * @author pure
 */
 public String thisYear() {
 x = localTime.get(Calendar.YEAR);
 return x + "-01" + "-01";
 }

 /**
 * 功能：得到当前年份年底格式为：xxxx-yy-zz (eg: 2007-12-31) 
 * @return String
 * @author pure
 */
 public String thisYearEnd() {
 x = localTime.get(Calendar.YEAR);
 return x + "-12" + "-31";
 }

 /**
 * 功能：判断输入年份是否为闰年 
 * @param year
 * @return 是：true 否：false
 * @author pure
 */
 public boolean leapYear(int year) {
 boolean leap;
 if (year % 4 == 0) {
 if (year % 100 == 0) {
 if (year % 400 == 0) leap = true;
 else leap = false;
 }
 else leap = true;
 }
 else leap = false;
 return leap;
 }
}