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10年前发布

Java用于取得当前日期相对应的月初，月末，季初，季末，年初，年末时间

package com.zrar.date;  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 DateThis {      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 DateThis() {          localTime = Calendar.getInstance();      }      /**       * 功能：得到当前日期 格式为：xxxx-yy-zz (eg: 2007-12-05)<br>        * @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)<br>        * @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)<br>        * @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)<br>        * @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)<br>        * @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)<br>        * @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)<br>        * @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<br>       *        * @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;      }  }