# Hierarchy For Package org.apache.commons.collections4.comparators

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.commons.collections4.comparators.BooleanComparator (implements java.util.Comparator<T>, java.io.Serializable)
  - org.apache.commons.collections4.comparators.ComparableComparator<E> (implements java.util.Comparator<T>, java.io.Serializable)
  - org.apache.commons.collections4.comparators.ComparatorChain<E> (implements java.util.Comparator<T>, java.io.Serializable)
  - org.apache.commons.collections4.comparators.FixedOrderComparator<T> (implements java.util.Comparator<T>, java.io.Serializable)
  - org.apache.commons.collections4.comparators.NullComparator<E> (implements java.util.Comparator<T>, java.io.Serializable)
  - org.apache.commons.collections4.comparators.ReverseComparator<E> (implements java.util.Comparator<T>, java.io.Serializable)
  - org.apache.commons.collections4.comparators.TransformingComparator<I,O> (implements java.util.Comparator<T>, java.io.Serializable)

## Enum Hierarchy

- java.lang.Object
  - java.lang.Enum<E> (implements java.lang.Comparable<T>, java.io.Serializable)
    - org.apache.commons.collections4.comparators.FixedOrderComparator.UnknownObjectBehavior