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Collection<T> stream() Collection�̗v�f������Stream�̃C���X�^���X�𐶐�
Arrays stream(T[] array) ������array�̗v�f������Stream�̃C���X�^���X�𐶐�
Stream of(T�c values) ������values������Stream�̃C���X�^���X�𐶐��B�܂������ɔz���n�����ꍇ�A���̔z��̗v�f�łł���Stream�C���X�^���X�𐶐����邱�Ƃ��”\
List<String> list = Arrays.asList(
        "list1", "list2", "list3", "list4", "list5"
);
String[] array = {"�z��1", "�z��2", "�z��3", "�z��4", "�z��5"};
// Stream�C���X�^���X�̐���
Stream<String> stream1 = list.stream();
Stream<String> stream2 = Arrays.stream(array);
Stream<String> stream3 = Stream.of("�P", "�Q", "�R", "�S", "�T");
Stream<String> stream4 = Stream.of(array);
// Stream�̊e�v�f��W���o�͂��܂��B
stream1.forEach(e -> System.out.println("stream1:" + e));
stream2.forEach(e -> System.out.println("stream2:" + e));
stream3.forEach(e -> System.out.println("stream3:" + e));
stream4.forEach(e -> System.out.println("stream4:" + e));
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stream1:list1
stream1:list2
stream1:list3
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stream2:�z��1
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�@�Ⴆ��Arrays#stream���\�b�h�̏ꍇ�A�����̔z�񂪐��l�̃v���~�e�B�u�^�iint�Ȃǁj���ƁA����ɑΉ������^��Stream�iIntStream�Ȃǁj��Ԃ��܂��B�������A�������v���~�e�B�u�^�̃��b�p�[�N���X�iInteger�Ȃǁj����Stream<���b�p�[�N���X>��Ԃ��܂��B

int[] intArray = {1, 2, 3, 4, 5};
Integer[] integerArray = {1, 2, 3, 4, 5};
IntStream intArrayStream = Arrays.stream(intArray);
Stream<Integer> integerArrayStream = Arrays.stream(integerArray);
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Stream<T> concat(Stream<? extends T> s1, Stream<? extends T> s2) �v�f�������^�A�������́A�e�������^������s1��s2��Stream��������1�‚�Stream�̃C���X�^���X�𐶐�
Stream<String> stream1 = Stream.of("��", "��", "��", "��", "��");
Stream<String> stream2 = Stream.of("�A", "�C", "�E", "�G", "�I");
Stream<String> concatStream = Stream.concat(stream1, stream2);
concatStream.forEach(value -> System.out.println(value));
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Stream<String> stream2 = Stream.of("�A", "�C", "�E", "�G", "�I");
Stream<String> parallelStream = stream1.parallel();
Stream<String> concatStream = Stream.concat(parallelStream, stream2);
concatStream.forEach(value -> System.out.println(value));
System.out.println("concatStream.isParallel()=" + concatStream.isParallel());
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Collection parallelStream() Collection�����ɕ��񏈗����s��Stream�̃C���X�^���X�𐶐�
BaseStream parallel() �Ăяo������Stream������񏈗����s��Stream��Ԃ�

�@�܂��AStream�̃C���X�^���X�����񏈗����s�����̂��ǂ����`�F�b�N����ɂ�BaseStream#isParallel���\�b�h�Ŋm�F�”\�ł��B���̃��\�b�h�����s�����ۂ�True���Ԃ�΁A���񏈗����s�����̂ɂȂ�܂��B

�@�t�ɁA���񏈗����璼�񏈗���Stream�𐶐�����ꍇ��BaseStream# sequential���\�b�h�Œ��񏈗���Stream�𐶐��”\�ł��B

List<String> list = Arrays.asList(
        "list1", "list2", "list3", "list4", "list5"
);
// ���񏈗����s��Stream�𐶐�
Stream<String> parallelStream1 = list.parallelStream();
Stream<String> parallelStream2 = list.stream().parallel();
// �������ꂽStream�����񏈗����s�����̂��m�F
System.out.println("parallelStream1.isParallel()=" + parallelStream1.isParallel());
System.out.println("parallelStream2.isParallel()=" + parallelStream2.isParallel());
// ���񏈗����璼�ڏ����ɕϊ�
Stream<String> sequentialStream = parallelStream1.sequential();
System.out.println("sequentialStream.isParallel()=" + sequentialStream.isParallel());
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parallelStream1.isParallel()=true
parallelStream2.isParallel()=true
sequentialStream.isParallel()=false
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