org.apache.commons.math.stat
Class Frequency.NaturalComparator<T extends java.lang.Comparable<T>>

java.lang.Object
  extended by org.apache.commons.math.stat.Frequency.NaturalComparator<T>
All Implemented Interfaces:
java.io.Serializable, java.util.Comparator<java.lang.Comparable<T>>
Enclosing class:
Frequency

private static class Frequency.NaturalComparator<T extends java.lang.Comparable<T>>
extends java.lang.Object
implements java.util.Comparator<java.lang.Comparable<T>>, java.io.Serializable

A Comparator that compares comparable objects using the natural order. Copied from Commons Collections ComparableComparator.


Field Summary
private static long serialVersionUID
          Serializable version identifier
 
Constructor Summary
private Frequency.NaturalComparator()
           
 
Method Summary
 int compare(java.lang.Comparable<T> o1, java.lang.Comparable<T> o2)
          Compare the two Comparable arguments.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface java.util.Comparator
equals
 

Field Detail

serialVersionUID

private static final long serialVersionUID
Serializable version identifier

See Also:
Constant Field Values
Constructor Detail

Frequency.NaturalComparator

private Frequency.NaturalComparator()
Method Detail

compare

public int compare(java.lang.Comparable<T> o1,
                   java.lang.Comparable<T> o2)
Compare the two Comparable arguments. This method is equivalent to:
((Comparable)o1).compareTo(o2)

Specified by:
compare in interface java.util.Comparator<java.lang.Comparable<T extends java.lang.Comparable<T>>>
Parameters:
o1 - the first object
o2 - the second object
Returns:
result of comparison
Throws:
java.lang.NullPointerException - when o1 is null, or when ((Comparable)o1).compareTo(o2) does
java.lang.ClassCastException - when o1 is not a Comparable, or when ((Comparable)o1).compareTo(o2) does


Copyright (c) 2003-2009 Apache Software Foundation