Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright (C) 2014-2017 Philip Helger (www.helger.com)
 * philip[at]helger[dot]com
 *
 * 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;

import java.util.Map;

import java.util.Objects;

import java.util.function.Predicate;

import javax.annotation.Nullable;

public class Main {
    /**
     * Check if the passed collection contains at least one <code>null</code>
     * element.
     *
     * @param aCont
     *        The collection to check. May be <code>null</code>.
     * @return <code>true</code> only if the passed collection is neither
     *         <code>null</code> nor empty and if at least one <code>null</code>
     *         element is contained.
     */
    public static boolean containsAnyNullElement(@Nullable final Iterable<?> aCont) {
        return containsAny(aCont, Objects::isNull);
    }

    public static <ELEMENTTYPE> boolean containsAny(@Nullable final Iterable<? extends ELEMENTTYPE> aCollection,
            @Nullable final Predicate<? super ELEMENTTYPE> aFilter) {
        if (aFilter == null)
            return isNotEmpty(aCollection);

        if (isNotEmpty(aCollection))
            for (final ELEMENTTYPE aElement : aCollection)
                if (aFilter.test(aElement))
                    return true;
        return false;
    }

    public static boolean isNotEmpty(@Nullable final Iterable<?> aCont) {
        return aCont != null && aCont.iterator().hasNext();
    }

    public static boolean isNotEmpty(@Nullable final Collection<?> aCont) {
        return aCont != null && !aCont.isEmpty();
    }

    public static boolean isNotEmpty(@Nullable final Map<?, ?> aCont) {
        return aCont != null && !aCont.isEmpty();
    }

    public static boolean isEmpty(@Nullable final Iterable<?> aCont) {
        return aCont == null || !aCont.iterator().hasNext();
    }

    public static boolean isEmpty(@Nullable final Collection<?> aCont) {
        return aCont == null || aCont.isEmpty();
    }

    public static boolean isEmpty(@Nullable final Map<?, ?> aCont) {
        return aCont == null || aCont.isEmpty();
    }
}