Ejemplo n.º 1
0
 @Override
 public final Double apply(
     final Stream<? extends ITerm> p_first, final Stream<? extends ITerm> p_second) {
   return this.ncd(
       p_first.map(Object::toString).collect(Collectors.joining("")),
       p_second.map(Object::toString).collect(Collectors.joining("")));
 }
Ejemplo n.º 2
0
  public static void main(String[] args) throws IOException {
    try (Stream<Path> stream = Files.list(Paths.get(""))) {
      String joined =
          stream
              .map(String::valueOf)
              .filter(path -> !path.startsWith("."))
              .sorted()
              .collect(Collectors.joining("; "));
      System.out.println("List: " + joined);
    }

    Path start = Paths.get("");
    int maxDepth = 5;
    try (Stream<Path> stream =
        Files.find(start, maxDepth, (path, attr) -> String.valueOf(path).endsWith(".java"))) {
      String joined = stream.sorted().map(String::valueOf).collect(Collectors.joining("; "));
      System.out.println("Found: " + joined);
    }

    try (Stream<Path> stream = Files.walk(start, maxDepth)) {
      String joined =
          stream
              .map(String::valueOf)
              .filter(path -> path.endsWith(".java"))
              .sorted()
              .collect(Collectors.joining("; "));
      System.out.println("walk(): " + joined);
    }

    List<String> lines = Files.readAllLines(Paths.get("src/golf.sh"));
    lines.add("puts 'foobar'");
    Path path = Paths.get("src/golf-modified.sh");
    Files.write(path, lines);

    try (Stream<String> stream = Files.lines(path)) {
      stream.filter(line -> line.contains("puts")).map(String::trim).forEach(System.out::println);
    }

    System.out.println("a" == "a");
    System.out.println("a" != new String("a"));
    System.out.println(null != "a");
    System.out.println("a".equals("a"));

    try (BufferedReader reader = Files.newBufferedReader(path)) {
      while (reader.ready()) System.out.println(reader.readLine());
    }

    try (BufferedWriter writer = Files.newBufferedWriter(Paths.get("hello-world.sh"))) {
      writer.write("puts 'Hello world'");
    }

    try (BufferedReader reader = Files.newBufferedReader(path)) {
      long countPuts = reader.lines().filter(line -> line.contains("put")).count();
      System.out.println(countPuts);
    }
  }
Ejemplo n.º 3
0
  public void testUncheckedIOException() throws IOException {
    Path triggerFile = testFolder.resolve(Paths.get("dir2", "IOException"));
    Files.createFile(triggerFile);
    Path triggerDir = testFolder.resolve(Paths.get("empty", "IOException"));
    Files.createDirectories(triggerDir);
    Files.createFile(triggerDir.resolve("file"));
    FaultyFileSystem.FaultyFSProvider fsp = FaultyFileSystem.FaultyFSProvider.getInstance();
    FaultyFileSystem fs = (FaultyFileSystem) fsp.newFileSystem(testFolder, null);

    try {
      fsp.setFaultyMode(false);
      Path fakeRoot = fs.getRoot();
      try (Stream<Path> s = Files.list(fakeRoot.resolve("dir2"))) {
        // only one file
        s.forEach(path -> assertEquals(path.getFileName().toString(), "IOException"));
      }

      try (Stream<Path> s = Files.walk(fakeRoot.resolve("empty"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        // ordered as depth-first
        assertEquals(result, new String[] {"empty", "IOException", "file"});
      }

      fsp.setFaultyMode(true);
      try (Stream<Path> s = Files.list(fakeRoot.resolve("dir2"))) {
        s.forEach(path -> fail("should have caused exception"));
      } catch (UncheckedIOException uioe) {
        assertTrue(uioe.getCause() instanceof FaultyFileSystem.FaultyException);
      }

      try (Stream<Path> s = Files.walk(fakeRoot.resolve("empty"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        fail("should not reach here due to IOException");
      } catch (UncheckedIOException uioe) {
        assertTrue(uioe.getCause() instanceof FaultyFileSystem.FaultyException);
      }

      try (Stream<Path> s = Files.walk(fakeRoot.resolve("empty").resolve("IOException"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        fail("should not reach here due to IOException");
      } catch (IOException ioe) {
        assertTrue(ioe instanceof FaultyFileSystem.FaultyException);
      } catch (UncheckedIOException ex) {
        fail("Top level should be repored as is");
      }
    } finally {
      // Cleanup
      if (fs != null) {
        fs.close();
      }
      Files.delete(triggerFile);
      TestUtil.removeAll(triggerDir);
    }
  }
Ejemplo n.º 4
0
  public static <T> String listToString(Iterable<T> elements, String sep) {

    if (elements == null) throw new IllegalArgumentException("elements cannot be null.");

    Stream<T> stream = StreamSupport.stream(elements.spliterator(), false);

    return stream.map(a -> a.toString()).collect(Collectors.joining(sep));
  }
Ejemplo n.º 5
0
  public static void main(String... args) {

    /*
    -------------------------------------------------------------------------
    From obj to ...
    -------------------------------------------------------------------------
    */
    Stream<String> streamOfStrings = Stream.of("un", "deux", "trois");
    Function<String, StringBuilder> function = StringBuilder::new;
    streamOfStrings.map(function) /*.forEach(System.out::println)*/;
    streamOfStrings = Stream.of("un", "deux", "trois");
    ToIntFunction<String> toIntFunction = String::length;
    IntStream streamOfInts = streamOfStrings.mapToInt(toIntFunction);
    streamOfStrings = Stream.of("un", "deux", "trois");
    ToDoubleFunction<String> toDoubleFunction = String::length;
    DoubleStream streamOfDoubles = streamOfStrings.mapToDouble(toDoubleFunction);
    streamOfStrings = Stream.of("un", "deux", "trois");
    ToLongFunction<String> toLongFunction = String::length;
    LongStream streamOfLongs = streamOfStrings.mapToLong(toLongFunction);

    /*
    -------------------------------------------------------------------------
    From int to ...
    -------------------------------------------------------------------------
    */
    IntUnaryOperator plusplus = i -> i++;
    IntStream.of(1, 2, 3).map(plusplus)
    /*.forEach(x->System.out.println(x))*/ ;
    IntFunction<String> intFunction = i -> "" + i;
    IntStream.of(1, 2, 3).mapToObj(intFunction)
    /*.forEach(System.out::println)*/ ;
    IntToDoubleFunction itdf = i -> i;
    IntStream.of(1, 2, 3).mapToDouble(itdf)
    /*.forEach(System.out::println)*/ ;
    IntToLongFunction itlf = i -> i;
    IntStream.of(1, 2, 3).mapToLong(itlf)
    /*.forEach(System.out::println)*/ ;

    /*
    -------------------------------------------------------------------------
    From long to ...
    -------------------------------------------------------------------------
    */
    LongUnaryOperator times = l -> l * l;
    LongStream.of(1L, 2L, 3L).map(times)
    /*.forEach(System.out::println)*/ ;
    LongFunction<String> lf = l -> "toto";
    LongStream.of(1L, 2L, 3L).mapToObj(lf);

    /*
    -------------------------------------------------------------------------
    From double to ...
    -------------------------------------------------------------------------
    */
    DoubleToIntFunction dtif = d -> (int) d;
    DoubleStream.of(1.3, 1.5, 1.6).mapToInt(dtif).forEach(System.out::println);
  }
Ejemplo n.º 6
0
 @Override
 public TurnOption requestPlayerChoiceForTurn(
     Set<TurnOption> possibleActions, Player player, int remainingMoves) {
   Stream<TurnOption> sortedOptions =
       possibleActions
           .stream()
           .sorted((option1, option2) -> option1.toString().compareTo(option2.toString()));
   TurnOption[] sortedOptionsArray = (TurnOption[]) sortedOptions.toArray();
   return sortedOptionsArray[this.selectOptionFromList(sortedOptions.map(TurnOption::toString))];
 }
Ejemplo n.º 7
0
 public Commit(de.fau.osr.core.vcs.base.Commit commit) {
   this.id = commit.getId();
   this.message = commit.getMessage();
   this.instanceRequirement = null;
   commitFiles =
       () -> {
         Stream<de.fau.osr.core.vcs.base.CommitFile> originalStream = commit.commitFiles.get();
         // convert the commitFiles from the backend
         return originalStream.map(commitFile -> new PathDE(commitFile.newPath.toPath()));
       };
 }
  /** Reference to constructor */
  @Test
  public void lambdaExpression_constructorReferences() {
    List<String> names = Lists.newArrayList("Teuvo", "Ari", "Kristiina");

    Stream<StringLengthComputer> counters = names.stream().map(StringLengthComputer::new);

    List<Integer> lengths =
        counters.map(StringLengthComputer::computeLength).collect(Collectors.toList());

    assertEquals(Lists.newArrayList(5, 3, 9), lengths);
  }
Ejemplo n.º 9
0
  /** Wrap a Stream into a SimpleReactStream. */
  static <T> SimpleReactStream<T> of(Stream<T> stream) {

    if (stream instanceof FutureStream)
      stream = ((FutureStream) stream).toQueue().stream(((FutureStream) stream).getSubscription());

    SimpleReact sr =
        new SimpleReact(
            ThreadPools.getSequential(),
            RetryBuilder.getDefaultInstance().withScheduler(ThreadPools.getSequentialRetry()),
            false);
    return new SimpleReactStreamImpl<T>(sr, stream.map(CompletableFuture::completedFuture), null);
  }
Ejemplo n.º 10
0
  /**
   * Returns a {@link List} of String arrays, each representing a line of text.
   *
   * @param pathToFile
   * @return
   */
  List<String[]> readInputData(String pathToFile) {
    Stream<String> stream = getInputDataStream(pathToFile);

    List<String[]> list =
        stream
            .map(
                l -> {
                  return (String[]) l.split("[\\s]*\\,[\\s]*");
                })
            .collect(Collectors.toList());

    return list;
  }
Ejemplo n.º 11
0
  public static CompilationUnit[] parseICompilationUnitStream(
      Stream<ICompilationUnit> stream, IJavaProject javaProject)
      throws IOException, JavaModelException {

    // Sneaky.<JavaModelException> Throw();
    // Sneaky.<IOException> Throw();
    return stream
        .map(ICompilationUnit::getResource)
        .map(IResource::getLocationURI)
        .map(File::new)
        .map(Sneaky.unchecked(f -> SharedUtils.parseJavaSource(f, javaProject)))
        .filter(Objects::nonNull)
        .toArray(CompilationUnit[]::new);
  }
  private List<DocumentationItemDTO> getDocumentation(
      List<Document> docs, String searchTerm, int maxResults) {
    Stream<DocumentationItem> documentationStream;
    if (searchTerm.isEmpty()) {
      documentationStream =
          documentationService.documentationForDocuments(docs, maxResults).stream();
    } else {
      documentationStream =
          documentationService.searchDocumentation(searchTerm, docs, maxResults).stream();
    }

    return documentationStream
        .map(Transformations::convertDocumentationItemToDTO)
        .collect(Collectors.toList());
  }
Ejemplo n.º 13
0
  public static void main(String[] args) {
    Stream<Double> piStream = Stream.generate(new PiSupplier());
    piStream.skip(1000000).limit(10).forEach(System.out::println);

    System.out.println("-------------------------------------------");

    Stream<Double> piStream_1 = Stream.generate(new PiSupplier());
    piStream_1
        .map(new EulerTransform())
        .map(new EulerTransform())
        .map(new EulerTransform())
        .map(new EulerTransform())
        .map(new EulerTransform())
        .map(new EulerTransform())
        .skip(10)
        .limit(20)
        .forEach(System.out::println);
  }
Ejemplo n.º 14
0
  public Analyze() throws IOException {
    Stream<String> lines = Files.lines(Paths.get(Break.LOCATION + "/result"));
    Stream<Result> s = lines.map(this::parseLine);

    System.out.println("Searching ...");
    FrequencyAnalysis frequencyAnalysis = new FrequencyAnalysis(FrequencyAnalysis.simple(), 0.8);

    Map<Break.Setup, String> answers =
        s.filter(result -> frequencyAnalysis.analyse(result.line))
            //                        .filter(result ->
            // frequencyAnalysis.containsKeywords(result.line))
            .collect(Collectors.toMap(r -> r.setup, r -> r.line));

    System.out.println("Found " + answers.values().size());
    answers.forEach(
        (k, v) -> {
          System.out.println(k + " -> " + v);
        });
    if (answers.isEmpty()) {
      throw new IllegalStateException("Did not find anything ...");
    }
  }
Ejemplo n.º 15
0
 @Override
 public Object map(Stream t, Function fn) {
   return t.map(fn);
 }
Ejemplo n.º 16
0
 @Override
 public Stream<String> apply(Stream<String> input) {
   return input.map(s -> s.replaceAll(regexp, replacement));
 }
Ejemplo n.º 17
0
  public void testSecurityException() throws IOException {
    Path empty = testFolder.resolve("empty");
    Path triggerFile = Files.createFile(empty.resolve("SecurityException"));
    Path sampleFile = Files.createDirectories(empty.resolve("sample"));

    Path dir2 = testFolder.resolve("dir2");
    Path triggerDir = Files.createDirectories(dir2.resolve("SecurityException"));
    Files.createFile(triggerDir.resolve("fileInSE"));
    Path sample = Files.createFile(dir2.resolve("file"));

    Path triggerLink = null;
    Path linkTriggerDir = null;
    Path linkTriggerFile = null;
    if (supportsLinks) {
      Path dir = testFolder.resolve("dir");
      triggerLink = Files.createSymbolicLink(dir.resolve("SecurityException"), empty);
      linkTriggerDir = Files.createSymbolicLink(dir.resolve("lnDirSE"), triggerDir);
      linkTriggerFile = Files.createSymbolicLink(dir.resolve("lnFileSE"), triggerFile);
    }

    FaultyFileSystem.FaultyFSProvider fsp = FaultyFileSystem.FaultyFSProvider.getInstance();
    FaultyFileSystem fs = (FaultyFileSystem) fsp.newFileSystem(testFolder, null);

    try {
      fsp.setFaultyMode(false);
      Path fakeRoot = fs.getRoot();
      // validate setting
      try (Stream<Path> s = Files.list(fakeRoot.resolve("empty"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        assertEqualsNoOrder(result, new String[] {"SecurityException", "sample"});
      }

      try (Stream<Path> s = Files.walk(fakeRoot.resolve("dir2"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        assertEqualsNoOrder(result, new String[] {"dir2", "SecurityException", "fileInSE", "file"});
      }

      if (supportsLinks) {
        try (Stream<Path> s = Files.list(fakeRoot.resolve("dir"))) {
          String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
          assertEqualsNoOrder(
              result,
              new String[] {"d1", "f1", "lnDir2", "SecurityException", "lnDirSE", "lnFileSE"});
        }
      }

      // execute test
      fsp.setFaultyMode(true);
      // ignore file cause SecurityException
      try (Stream<Path> s = Files.walk(fakeRoot.resolve("empty"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        assertEqualsNoOrder(result, new String[] {"empty", "sample"});
      }
      // skip folder cause SecurityException
      try (Stream<Path> s = Files.walk(fakeRoot.resolve("dir2"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        assertEqualsNoOrder(result, new String[] {"dir2", "file"});
      }

      if (supportsLinks) {
        // not following links
        try (Stream<Path> s = Files.walk(fakeRoot.resolve("dir"))) {
          String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
          assertEqualsNoOrder(
              result, new String[] {"dir", "d1", "f1", "lnDir2", "lnDirSE", "lnFileSE"});
        }

        // following links
        try (Stream<Path> s = Files.walk(fakeRoot.resolve("dir"), FileVisitOption.FOLLOW_LINKS)) {
          String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
          // ?? Should fileInSE show up?
          // With FaultyFS, it does as no exception thrown for link to "SecurityException" with read
          // on "lnXxxSE"
          assertEqualsNoOrder(
              result,
              new String[] {
                "dir", "d1", "f1", "lnDir2", "file", "lnDirSE", "lnFileSE", "fileInSE"
              });
        }
      }

      // list instead of walk
      try (Stream<Path> s = Files.list(fakeRoot.resolve("empty"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        assertEqualsNoOrder(result, new String[] {"sample"});
      }
      try (Stream<Path> s = Files.list(fakeRoot.resolve("dir2"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        assertEqualsNoOrder(result, new String[] {"file"});
      }

      // root cause SecurityException should be reported
      try (Stream<Path> s = Files.walk(fakeRoot.resolve("dir2").resolve("SecurityException"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        fail("should not reach here due to SecurityException");
      } catch (SecurityException se) {
        assertTrue(se.getCause() instanceof FaultyFileSystem.FaultyException);
      }

      // Walk a file cause SecurityException, we should get SE
      try (Stream<Path> s = Files.walk(fakeRoot.resolve("dir").resolve("SecurityException"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        fail("should not reach here due to SecurityException");
      } catch (SecurityException se) {
        assertTrue(se.getCause() instanceof FaultyFileSystem.FaultyException);
      }

      // List a file cause SecurityException, we should get SE as cannot read attribute
      try (Stream<Path> s = Files.list(fakeRoot.resolve("dir2").resolve("SecurityException"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        fail("should not reach here due to SecurityException");
      } catch (SecurityException se) {
        assertTrue(se.getCause() instanceof FaultyFileSystem.FaultyException);
      }

      try (Stream<Path> s = Files.list(fakeRoot.resolve("dir").resolve("SecurityException"))) {
        String[] result = s.map(path -> path.getFileName().toString()).toArray(String[]::new);
        fail("should not reach here due to SecurityException");
      } catch (SecurityException se) {
        assertTrue(se.getCause() instanceof FaultyFileSystem.FaultyException);
      }
    } finally {
      // Cleanup
      if (fs != null) {
        fs.close();
      }
      if (supportsLinks) {
        Files.delete(triggerLink);
        Files.delete(linkTriggerDir);
        Files.delete(linkTriggerFile);
      }
      Files.delete(triggerFile);
      Files.delete(sampleFile);
      Files.delete(sample);
      TestUtil.removeAll(triggerDir);
    }
  }
Ejemplo n.º 18
0
  @SuppressWarnings("unchecked")
  public static void main(String... args) throws Exception {

    Stream<String> scrabbleWordsStream = Files.lines(Paths.get("files", "ospd.txt"));
    Set<String> scrabbleWords =
        scrabbleWordsStream.map(String::toLowerCase).collect(Collectors.toSet());

    Stream<String> shakespeareWordsStream =
        Files.lines(Paths.get("files", "words.shakespeare.txt"));
    Set<String> shakespeareWords =
        shakespeareWordsStream.map(String::toLowerCase).collect(Collectors.toSet());

    System.out.println("# de mots autorisés au Scrabble : " + scrabbleWords.size());

    // mots utilisés par Shakespeare
    Long nWords1 = shakespeareWords.stream().count();
    System.out.println("# ofmots utilisés par Shakespeare  : " + nWords1);

    // number of words used by Shakespeare and allowed at Scrabble
    long count =
        shakespeareWords.stream().map(String::toLowerCase).filter(scrabbleWords::contains).count();
    System.out.println("# number of words used by Shakespeare and allowed at Scrabble = " + count);

    // words of Shakespeare grouped by their length
    Map<Integer, Long> map1 =
        shakespeareWords
            .stream()
            .collect(Collectors.groupingBy(String::length, Collectors.counting()));
    System.out.println("Words of Shakespeare grouped by their length = " + map1);

    // words of Shakespeare of 16 letters and more
    Map<Integer, List<String>> map2 =
        shakespeareWords
            .stream()
            .filter(word -> word.length() > 15)
            .collect(Collectors.groupingBy(String::length));
    System.out.println("Words of Shakespeare of 16 letters and more = " + map2);

    // words of Shakespeare grouped by their Scrabble score
    // in ascending order
    Function<String, Integer> score = word -> word.chars().map(scrabbleLetterValueEN).sum();
    Map<Integer, Long> map3 =
        shakespeareWords
            .stream()
            .map(String::toLowerCase)
            .filter(scrabbleWords::contains)
            .collect(Collectors.groupingBy(score, TreeMap::new, Collectors.counting()));
    System.out.println("Words of Shakespeare grouped by their Scrabble score = " + map3);

    // words of Shakespeare grouped by their Scrabble score, with a score greater than 29
    // in ascending order
    Predicate<String> scoreGT28 = word -> score.apply(word) > 28;
    Map<Integer, List<String>> map4 =
        shakespeareWords
            .stream()
            .map(String::toLowerCase)
            .filter(scrabbleWords::contains)
            .filter(scoreGT28)
            .collect(Collectors.groupingBy(score, TreeMap::new, Collectors.toList()));
    System.out.println("Words of Shakespeare grouped by their Scrabble score = " + map4);

    // histogram of the letters in a given word
    Function<String, Map<Integer, Long>> lettersHisto =
        word ->
            word.chars()
                .mapToObj(Integer::new)
                .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));

    // score of a given word, taking into account that the given word
    // might contain blank letters
    Function<String, Integer> scoreWithBlanks =
        word ->
            lettersHisto
                .apply(word)
                .entrySet()
                .stream() // Map.Entry<letters, # used>
                .mapToInt(
                    entry ->
                        scrabbleENScore[entry.getKey() - 'a']
                            * (int)
                                Long.min(
                                    entry.getValue(), scrabbleENDistribution[entry.getKey() - 'a']))
                .sum();

    // number of blanks used for the given word
    Function<String, Integer> blanksUsed =
        word ->
            lettersHisto
                .apply(word)
                .entrySet()
                .stream() // Map.Entry<letters, # used>
                .mapToInt(
                    entry ->
                        (int)
                            Long.max(
                                0L,
                                entry.getValue() - scrabbleENDistribution[entry.getKey() - 'a']))
                .sum();

    System.out.println("Number of blanks in [buzzards] = " + blanksUsed.apply("buzzards"));
    System.out.println("Real score of [buzzards] = " + scoreWithBlanks.apply("buzzards"));
    System.out.println("Number of blanks in [whizzing] = " + blanksUsed.apply("whizzing"));
    System.out.println("Real score of [whizzing] = " + scoreWithBlanks.apply("whizzing"));

    // best words of Shakespeare and their scores
    Map<Integer, List<String>> map =
        shakespeareWords
            .stream()
            .filter(scrabbleWords::contains)
            .filter(word -> blanksUsed.apply(word) <= 2L)
            .filter(word -> scoreWithBlanks.apply(word) >= 24)
            .collect(Collectors.groupingBy(scoreWithBlanks, Collectors.toList()));
    System.out.println("Best words of Shakespeare : " + map);
  }
Ejemplo n.º 19
0
 @Override
 public Stream<String> apply(Stream<String> input) {
   return input.map(Functions.cut(delimiter, field));
 }
Ejemplo n.º 20
0
  default <R> SimpleReactStream<R> fromStream(Stream<R> stream) {

    return (SimpleReactStream<R>)
        this.withLastActive(
            getLastActive().withNewStream(stream.map(CompletableFuture::completedFuture)));
  }
Ejemplo n.º 21
0
 static void filesTest() {
   // Files.list
   try {
     try (Stream<Path> stream = Files.list(Paths.get("/opt"))) {
       String joined =
           stream
               .map(String::valueOf)
               .filter(path -> !path.startsWith("."))
               .sorted()
               .collect(Collectors.joining("; "));
       System.out.println("List path /opt : " + joined);
     }
   } catch (IOException e) {
     e.printStackTrace();
   }
   // Files.find
   Path start = Paths.get("/Users/alibaba/Downloads/2016113");
   int maxDepth = 5;
   try (Stream<Path> stream =
       Files.find(start, maxDepth, (path, attr) -> String.valueOf(path).endsWith(".js"))) {
     String joined = stream.sorted().map(String::valueOf).collect(Collectors.joining("; "));
     System.out.println("Files find : " + joined);
   } catch (IOException e) {
     e.printStackTrace();
   }
   // Files.walk
   try (Stream<Path> stream = Files.walk(start, maxDepth)) {
     String joined =
         stream
             .map(String::valueOf)
             .filter(path -> path.endsWith(".js"))
             .sorted()
             .collect(Collectors.joining("; "));
     System.out.println("Files walk : " + joined);
   } catch (IOException e) {
     e.printStackTrace();
   }
   // Files.readAllLines
   try {
     String p = "/Users/alibaba/linuxsir.txt";
     List<String> lines = Files.readAllLines(Paths.get(p));
     lines.add("print('foobar');");
     Files.write(Paths.get(p), lines);
     lines.remove(lines.size() - 1);
     System.out.println("readAllLines " + lines);
     Files.write(Paths.get(p), lines);
   } catch (IOException e) {
     e.printStackTrace();
   }
   // Files.lines
   try (Stream<String> stream = Files.lines(Paths.get("/Users/alibaba/linuxsir.txt"))) {
     stream.filter(line -> line.contains("w")).map(String::valueOf).forEach(System.out::println);
   } catch (IOException e) {
     e.printStackTrace();
   }
   // Files.newBufferedReader&Files.newBufferedWriter
   Path path = Paths.get("/Users/alibaba/linuxsir.txt");
   try (BufferedReader reader = Files.newBufferedReader(path)) {
     System.out.println(reader.readLine());
   } catch (IOException e) {
     e.printStackTrace();
   }
   path = Paths.get("/Users/alibaba/output.txt");
   try (BufferedWriter writer = Files.newBufferedWriter(path)) {
     writer.write("print('Hello World')");
   } catch (IOException e) {
     e.printStackTrace();
   }
 }
Ejemplo n.º 22
0
 @Override
 public Stream<String> apply(Stream<T> input) {
   return input.map(Object::toString);
 }
 private Stream<Optional<JobClass_old>> getStreamJobClasses(Stream<String> strmJobID) {
   return strmJobID.map(j -> lstClass.stream().filter(job -> job.getId().equals(j)).findAny());
 }