Java Collection Contain containsByIdentity(Collection collection, Object toBeFound)

Description

Check if a collection contains a specific object by searching for it by identity instead of by using equals/hashcode.

License

Apache License

Parameter

Parameter	Description
collection	the collection to search in.
toBeFound	the object to search for.

Return

true if the collection contains the object, false otherwise.

Declaration

public static boolean containsByIdentity(Collection<?> collection, Object toBeFound) 

Method Source Code

//package com.java2s;
/*/*  w  w  w  .ja  v  a 2s.c  o  m*/
 * Copyright (C) 2006-2013 Bitronix Software (http://www.bitronix.be)
 *
 * 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.
 */

import java.util.Collection;

public class Main {
    /**
     * Check if a collection contains a specific object by searching for it by identity
     * instead of by using equals/hashcode.
     * @param collection the collection to search in.
     * @param toBeFound the object to search for.
     * @return true if the collection contains the object, false otherwise.
     */
    public static boolean containsByIdentity(Collection<?> collection, Object toBeFound) {
        for (Object o : collection) {
            if (o == toBeFound)
                return true;
        }
        return false;
    }
}

Related

1. containsAnyVariables(Collection propertyValues)
2. containsAssignableClass( Collection> clses, Class clazz)
3. containsAtLeastOne(Collection origin, Collection elements)
4. containsAtleastOne(Collection left, Collection right)
5. containsByClassName(Collection objects, String className)
6. containsClassOrSuper(Collection classNames, String className)
7. containsElement(Collection collect, T elem)
8. containsIdentity(Collection collection, T element)
9. containsIdentity(Collection objects, Object object)