/*
* Copyright 2007 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package java.util;
class Comparators {
/*
* This is a utility class that provides a default Comparator. This class
* exists so Arrays and Collections can share the natural comparator without
* having to know internals of each other.
*
* This class is package protected since it is not in the JRE.
*/
/**
* Compares two Objects according to their <i>natural ordering</i>.
*
* @see java.lang.Comparable
*/
private static final Comparator<Object> NATURAL = new Comparator<Object>() {
public int compare(Object o1, Object o2) {
return ((Comparable<Object>) o1).compareTo(o2);
}
};
/**
* Returns the natural Comparator.
* <p>
* Example:
*
* <pre>Comparator<String> compareString = Comparators.natural()</pre>
*
* @return the natural Comparator
*/
public static <T> Comparator<T> natural() {
return (Comparator<T>) NATURAL;
}
}