Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        Integer[] intArray = { 1, 2, 3, 4, 5, 6, 7, 8 };
        List<Integer> listOfIntegers = new ArrayList<>(Arrays.asList(intArray));

        List<Integer> serialStorage = new ArrayList<>();

        System.out.println("Serial stream:");
        listOfIntegers.stream()

                // Don't do this! It uses a stateful lambda expression. 
                .map(e -> {
                    serialStorage.add(e);
                    return e;
                })

                .forEachOrdered(e -> System.out.print(e + " "));
        System.out.println("");

        serialStorage.stream().forEachOrdered(e -> System.out.print(e + " "));
        System.out.println("");

        System.out.println("Parallel stream:");
        List<Integer> parallelStorage = Collections.synchronizedList(new ArrayList<>());
        listOfIntegers.parallelStream()

                // Don't do this! It uses a stateful lambda expression.
                .map(e -> {
                    parallelStorage.add(e);
                    return e;
                })

                .forEachOrdered(e -> System.out.print(e + " "));
        System.out.println("");

        parallelStorage.stream().forEachOrdered(e -> System.out.print(e + " "));
        System.out.println("");

    }
}

/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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 */