Java Stream of streamOfOptional(Optional element)

Description

stream Of Optional

License

Open Source License

Declaration

public static <T> Stream<T> streamOfOptional(Optional<T> element) 

Method Source Code

//package com.java2s;
/**/* w  w  w .j a  va 2 s  . co m*/
 *
 * Copyright (c) 2006-2015, Speedment, Inc. All Rights Reserved.
 *
 * 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.Optional;

import java.util.stream.Stream;

public class Main {
    public static <T> Stream<T> streamOfOptional(Optional<T> element) {
        return Stream.of(element.orElse(null)).filter(e -> e != null);
    }
}

Related

1. streamOf(Iterable it)
2. streamOf(Iterable iterable)
3. streamof(Iterable vals)
4. streamOf(T value)
5. streamOfEnumeration(Enumeration e, boolean parallel)
6. streamOrEmpty(Iterable iterable)
7. streamScanner(Scanner scanner)
8. streamToList(Stream stream)
9. toParallelStream(Iterator iter)