Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/**
 * CollectionUtil.java
 *
 * Copyright 2012 Niolex, Inc.
 *
 * Niolex licenses this file to you 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;

import java.util.Map;

public class Main {
    /**
     * Return <code>true</code> if the supplied Collection is not <code>null</code>
     * and contain only one element. Otherwise, return <code>false</code>.<br>
     *
     * @param collection the Collection to be checked
     * @return whether the given Collection is Single
     */
    public static boolean isSingle(Collection<?> collection) {
        return (collection != null && collection.size() == 1);
    }

    /**
     * Return <code>true</code> if the supplied Map is not <code>null</code>
     * and contain only one element. Otherwise, return <code>false</code>.<br>
     *
     * @param map the Map to be checked
     * @return whether the given Map is Single
     */
    public static boolean isSingle(Map<?, ?> map) {
        return (map != null && map.size() == 1);
    }
}