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java.lang.Object org.apache.commons.collections.comparators.ReverseComparator<T>
public class ReverseComparator<T>
Reverses the order of another comparator by reversing the arguments
to its compare
method.
Collections.reverseOrder()
,
Serialized FormConstructor Summary | |
---|---|
ReverseComparator(Comparator<T> comparator)
Creates a comparator that inverts the comparison of the given comparator. |
Method Summary | |
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int |
compare(T obj1,
T obj2)
Compares two objects in reverse order. |
boolean |
equals(Object object)
Returns true iff that Object is
is a Comparator whose ordering is known to be
equivalent to mine. |
int |
hashCode()
Implement a hash code for this comparator that is consistent with equals . |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ReverseComparator(Comparator<T> comparator)
ComparableComparator
for reversing the natural order, as per
Collections.reverseOrder()
.
comparator
- Comparator to reverseMethod Detail |
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public int compare(T obj1, T obj2)
compare
in interface Comparator<T>
obj1
- the first object to compareobj2
- the second object to compare
public int hashCode()
equals
.
hashCode
in class Object
public boolean equals(Object object)
true
iff that Object is
is a Comparator
whose ordering is known to be
equivalent to mine.
This implementation returns true
iff object.getClass()
equals this.getClass()
, and the underlying
comparators are equal.
Subclasses may want to override this behavior to remain consistent
with the equals
contract.
equals
in interface Comparator<T>
equals
in class Object
object
- the object to compare to
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