Package com.unboundid.util

Class ReverseComparator<T>

  • Type Parameters:
    T - The type of object to use with this comparator.
    All Implemented Interfaces:
    java.io.Serializable, java.util.Comparator<T>
    @NotMutable
@ThreadSafety(level=COMPLETELY_THREADSAFE)
public final class ReverseComparator<T>
extends java.lang.Object
implements java.util.Comparator<T>, java.io.Serializable
    This class provides an implementation of a Comparator object that may be used to iterate through values in what would normally be considered reverse order.
    See Also:
    Serialized Form

    • Constructor Summary

      Constructors 
      Constructor Description
      ReverseComparator()
      Creates a new comparator that will sort items in reverse order.
      ReverseComparator​(java.util.Comparator<T> baseComparator)
      Creates a new comparator that will sort items in the reverse order that they would be normally sorted using the given comparator.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int compare​(T o1, T o2)
      Compares the provided objects to determine their relative order in a sorted list.
      boolean equals​(java.lang.Object o)
      Indicates whether the provided object may be considered equal to this comparator.
      int hashCode()
      Retrieves a hash code for this class.

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface java.util.Comparator

        reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

    • Constructor Detail

      • ReverseComparator

        public ReverseComparator()
        Creates a new comparator that will sort items in reverse order. The generic type for this class must implement the Comparable interface.

      • ReverseComparator

        public ReverseComparator​(java.util.Comparator<T> baseComparator)
        Creates a new comparator that will sort items in the reverse order that they would be normally sorted using the given comparator.
        Parameters:
        baseComparator - The base comparator that will be used to make the determination.

    • Method Detail

      • compare

        public int compare​(T o1,
                   T o2)
        Compares the provided objects to determine their relative order in a sorted list.
        Specified by:
        compare in interface java.util.Comparator<T>
        Parameters:
        o1 - The first object to compare.
        o2 - The second object to compare.
        Returns:
        A negative integer if the first object should be ordered before the second, a positive integer if the first object should be ordered after the second, or zero if there is no difference in their relative orders.

      • hashCode

        public int hashCode()
        Retrieves a hash code for this class.
        Overrides:
        hashCode in class java.lang.Object
        Returns:
        A hash code for this class.

      • equals

        public boolean equals​(java.lang.Object o)
        Indicates whether the provided object may be considered equal to this comparator.
        Specified by:
        equals in interface java.util.Comparator<T>
        Overrides:
        equals in class java.lang.Object
        Parameters:
        o - The object for which to make the determination.
        Returns:
        true if the provided object may be considered equal to this comparator, or false if not.