Examples of java.io.BufferedReader.lines()

java.io.BufferedReader.lines()
Returns a {@code Stream}, the elements of which are lines read from this {@code BufferedReader}. The {@link Stream} is lazily populated,i.e., read only occurs during the terminal stream operation.
The reader must not be operated on during the execution of the terminal stream operation. Otherwise, the result of the terminal stream operation is undefined.
After execution of the terminal stream operation there are no guarantees that the reader will be at a specific position from which to read the next character or line.
If an {@link IOException} is thrown when accessing the underlying{@code BufferedReader}, it is wrapped in an {@link UncheckedIOException} which will be thrown from the {@code Stream}method that caused the read to take place. This method will return a Stream if invoked on a BufferedReader that is closed. Any operation on that stream that requires reading from the BufferedReader after it is closed, will cause an UncheckedIOException to be thrown. @return a {@code Stream} providing the lines of textdescribed by this {@code BufferedReader} @since 1.8

    @Override
    public Iterator<Vertex> readVertices(final InputStream inputStream, final Direction direction,
                                         final Function<DetachedVertex, Vertex> vertexMaker,
                                         final Function<DetachedEdge, Edge> edgeMaker) throws IOException {
        final BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
        return br.lines().<Vertex>map(FunctionUtils.wrapFunction(line -> readVertex(new ByteArrayInputStream(line.getBytes()), direction, vertexMaker, edgeMaker))).iterator();
    }


    @Override
    public Edge readEdge(final InputStream inputStream, final Function<DetachedEdge, Edge> edgeMaker) throws IOException {
        final Map<String, Object> edgeData = mapper.readValue(inputStream, mapTypeReference);

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     * @since   1.8
     */
    public static Stream<String> lines(Path path, Charset cs) throws IOException {
        BufferedReader br = Files.newBufferedReader(path, cs);
        try {
            return br.lines().onClose(asUncheckedRunnable(br));
        } catch (Error|RuntimeException e) {
            try {
                br.close();
            } catch (IOException ex) {
                try {

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     * Converts input stream to String containing lines separated by \n
     */
    private String readStream(final InputStream stream)  {
        final BufferedReader reader = new BufferedReader(new InputStreamReader(stream, StandardCharsets.UTF_8));
        final StringJoiner builder = new StringJoiner("\n");
        reader.lines().forEach(builder::add);
        return builder.toString();
    }
}

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    writer.close();


    BufferedReader reader = Files.newBufferedReader(tempFile, StandardCharsets.UTF_8);
    // BufferedReader.lines() returns a stream containing lines in the Reader, these are only (lazily) read when the
    // terminal operation of the stream is executed - e.g. collect()
    List<String> readPhrase = reader.lines().collect(Collectors.toList());
    reader.close();


    assertThat(readPhrase, is(Arrays.asList(phrase)));
  }

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