structure
Class NaturalComparator

java.lang.Object
  |
  +--structure.NaturalComparator
All Implemented Interfaces:
java.util.Comparator

public class NaturalComparator
extends java.lang.Object
implements java.util.Comparator

Implementation of the Comparator interface that provides a compare(java.lang.Object, java.lang.Object) method that compares two objects using those objects default compareTo methods.

Example usage:

To print out the equality relationship between two randomly generated integers we could use the following:

 public static void main(String[] argv){
     Random  rand = new Random();
     Comparator c = new NaturalComparator();
      
     //generate two random Integers
     Integer a = new Integer(rand.nextInt(100));
     Integer b = new Integer(rand.nextInt(100));
      
     //print out the proper equality relationship between these integers
     if(c.compare(a,b) > 0) System.out.println("A:" + a + " > B:" + b);
     else if (c.compare(a,b) < 0) System.out.println("A:" + a + " < B:" + b);
     else System.out.println("A:" + a + " = B:" + b);
 

 


Constructor Summary
NaturalComparator()
           
 
Method Summary
 int compare(java.lang.Object a, java.lang.Object b)
          Compare two values, a and b.
 boolean equals(java.lang.Object b)
          Returns true if the other object is a NaturalComparator.
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

NaturalComparator

public NaturalComparator()
Method Detail

compare

public int compare(java.lang.Object a,
                   java.lang.Object b)
Compare two values, a and b. Simply calls the default compareTo method for a on b.

Specified by:
compare in interface java.util.Comparator
Parameters:
a - object performing the compare
b - the object being compared
Returns:
value <, ==, > 0 if a <, ==, > b using a.compareTo

equals

public boolean equals(java.lang.Object b)
Returns true if the other object is a NaturalComparator.

Specified by:
equals in interface java.util.Comparator
Overrides:
equals in class java.lang.Object
Parameters:
b - a possible NaturalComparator
Returns:
true if b is a NaturalComparator