Java Collection Contain containsAtleastOne(Collection left, Collection right)

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Description

Checks if right hand collection has atleast one same item as left hand collection.

License

Apache License

Parameter

Parameter Description
S the generic type
left the left collection
right the right collection

Return

true, right contains at least one item from left, false otherwise.

Declaration 

public static <S> boolean containsAtleastOne(Collection<S> left, Collection<S> right)

Method Source Code

//package com.java2s;
/*/*from w w  w  . j a  v a  2 s.com*/
 * Copyright 2015 the original author or authors.
 *
 * 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 {
    /**
     * Checks if right hand collection has atleast one same item as left hand
     * collection.
     *
     * @param <S> the generic type
     * @param left the left collection
     * @param right the right collection
     * @return true, right contains at least one item from left, false otherwise.
     */
    public static <S> boolean containsAtleastOne(Collection<S> left, Collection<S> right) {
        if (left == null || right == null) {
            return false;
        }
        for (S id : left) {
            if (right.contains(id)) {
                return true;
            }
        }
        return false;
    }
}

Related

  1. containsAnyNull(Collection source)
  2. containsAnyOf(String s, Collection values)
  3. containsAnyVariables(Collection propertyValues)
  4. containsAssignableClass( Collection> clses, Class clazz)
  5. containsAtLeastOne(Collection origin, Collection elements)
  6. containsByClassName(Collection objects, String className)
  7. containsByIdentity(Collection collection, Object toBeFound)
  8. containsClassOrSuper(Collection classNames, String className)
  9. containsElement(Collection collect, T elem)