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/*
* Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.internal.util.collection;
import java.io.Serializable;
/**
* A key comparator.
*
* @param Key's type
* @author Paul Sandoz
*/
public interface KeyComparator extends Serializable {
/**
* Compare two keys for equality.
*
* @param x the first key
* @param y the second key
* @return true if the keys are equal.
*/
boolean equals(K x, K y);
/**
* Get the hash code of a key.
* @param k the key.
* @return the hash code of the key.
*/
int hash(K k);
}