程序包 edu.princeton.cs.algs4

类 Date

  • 所有已实现的接口:
    java.lang.Comparable<Date>
    public class Date
extends java.lang.Object
implements java.lang.Comparable<Date>
    The Date class is an immutable data type to encapsulate a date (day, month, and year).

    For additional documentation, see Section 1.2 of Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne.

    • 构造器概要

      构造器 
      构造器 说明
      Date​(int month, int day, int year)
      Initializes a new date from the month, day, and year.
      Date​(java.lang.String date)
      Initializes new date specified as a string in form MM/DD/YYYY.

    • 方法概要

      修饰符和类型 方法 说明
      int compareTo​(Date that)
      Compares two dates chronologically.
      int day()
      Returns the day.
      boolean equals​(java.lang.Object other)
      Compares this date to the specified date.
      int hashCode()
      Returns an integer hash code for this date.
      boolean isAfter​(Date that)
      Compares two dates chronologically.
      boolean isBefore​(Date that)
      Compares two dates chronologically.
      static void main​(java.lang.String[] args)
      Unit tests the Date data type.
      int month()
      Return the month.
      Date next()
      Returns the next date in the calendar.
      java.lang.String toString()
      Returns a string representation of this date.
      int year()
      Returns the year.

      • 从类继承的方法 java.lang.Object

        clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    • 构造器详细资料

      • Date

        public Date​(int month,
            int day,
            int year)
        Initializes a new date from the month, day, and year.
        参数:
        month - the month (between 1 and 12)
        day - the day (between 1 and 28-31, depending on the month)
        year - the year
        抛出:
        java.lang.IllegalArgumentException - if this date is invalid

      • Date

        public Date​(java.lang.String date)
        Initializes new date specified as a string in form MM/DD/YYYY.
        参数:
        date - the string representation of this date
        抛出:
        java.lang.IllegalArgumentException - if this date is invalid

    • 方法详细资料

      • month

        public int month()
        Return the month.
        返回:
        the month (an integer between 1 and 12)

      • day

        public int day()
        Returns the day.
        返回:
        the day (an integer between 1 and 31)

      • year

        public int year()
        Returns the year.
        返回:
        the year

      • next

        public Date next()
        Returns the next date in the calendar.
        返回:
        a date that represents the next day after this day

      • isAfter

        public boolean isAfter​(Date that)
        Compares two dates chronologically.
        参数:
        that - the other date
        返回:
        true if this date is after that date; false otherwise

      • isBefore

        public boolean isBefore​(Date that)
        Compares two dates chronologically.
        参数:
        that - the other date
        返回:
        true if this date is before that date; false otherwise

      • compareTo

        public int compareTo​(Date that)
        Compares two dates chronologically.
        指定者:
        compareTo 在接口中 java.lang.Comparable<Date>
        返回:
        the value 0 if the argument date is equal to this date; a negative integer if this date is chronologically less than the argument date; and a positive ineger if this date is chronologically after the argument date

      • toString

        public java.lang.String toString()
        Returns a string representation of this date.
        覆盖:
        toString 在类中 java.lang.Object
        返回:
        the string representation in the format MM/DD/YYYY

      • equals

        public boolean equals​(java.lang.Object other)
        Compares this date to the specified date.
        覆盖:
        equals 在类中 java.lang.Object
        参数:
        other - the other date
        返回:
        true if this date equals other; false otherwise

      • hashCode

        public int hashCode()
        Returns an integer hash code for this date.
        覆盖:
        hashCode 在类中 java.lang.Object
        返回:
        an integer hash code for this date

      • main

        public static void main​(java.lang.String[] args)
        Unit tests the Date data type.
        参数:
        args - the command-line arguments