Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (c) 2017, 2017, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

import java.util.ArrayList;

import java.util.List;

import java.util.function.Function;
import java.util.function.IntFunction;
import java.util.function.Predicate;

public class Main {
    /**
     * Filters the inputs, maps them given the mapping function and adds them in the array provided
     * by the generator.
     */
    public static <T, R> R[] filterAndMapToArray(T[] inputs, Predicate<? super T> predicate,
            Function<? super T, ? extends R> mapper, IntFunction<R[]> arrayGenerator) {
        List<R> resultList = new ArrayList<>();
        for (T t : inputs) {
            if (predicate.test(t)) {
                resultList.add(mapper.apply(t));
            }
        }
        return resultList.toArray(arrayGenerator.apply(resultList.size()));
    }
}