Example usage for java.util.stream Collectors joining

Introduction

In this page you can find the example usage for java.util.stream Collectors joining.

Prototype

public static Collector<CharSequence, ?, String> joining(CharSequence delimiter)

Source Link

Document

Returns a Collector that concatenates the input elements, separated by the specified delimiter, in encounter order.

Usage

From source file:com.diffplug.gradle.GradleIntegrationTest.java

protected void write(String path, String... lines) throws IOException {
    String content = Arrays.asList(lines).stream().collect(Collectors.joining("\n")) + "\n";
    Path target = folder.getRoot().toPath().resolve(path);
    Files.createDirectories(target.getParent());
    Files.write(target, content.getBytes(StandardCharsets.UTF_8));
}

From source file:io.github.binout.jaxrs.csv.CsvSchemaFactoryTest.java

static String inputStreamToString(InputStream is) throws IOException {
    try (BufferedReader br = new BufferedReader(new InputStreamReader(is))) {
        return br.lines().collect(Collectors.joining(System.lineSeparator()));
    }//from   ww  w.  ja  v  a 2 s.c om
}

From source file:com.simiacryptus.util.lang.CodeUtil.java

/**
 * Find file file.//from   ww w .j  a  v  a  2 s .  c  om
 *
 * @param callingFrame the calling frame
 * @return the file
 */
@javax.annotation.Nonnull
public static File findFile(@javax.annotation.Nonnull final StackTraceElement callingFrame) {
    @javax.annotation.Nonnull
    final String[] packagePath = callingFrame.getClassName().split("\\.");
    @javax.annotation.Nonnull
    final String path = Arrays.stream(packagePath).limit(packagePath.length - 1)
            .collect(Collectors.joining(File.separator)) + File.separator + callingFrame.getFileName();
    return com.simiacryptus.util.lang.CodeUtil.findFile(path);
}

From source file:edu.emory.bmi.datacafe.core.DataCafeUtil.java

/**
 * Construct a string from a collection//from  ww  w  .j ava  2s. c o m
 *
 * @param collection the collection
 * @return the collection as a comma separated line
 */
public static String constructStringFromCollection(Collection collection) {
    // This line of code is genius (despite looking ugly).
    // Future maintainer: Be careful if you are trying to refactor it.
    return (String) collection.stream().map(i -> doublequote(doubleTheDoubleQuote(i.toString())))
            .collect(Collectors.joining(","));
}

From source file:org.flywaydb.core.internal.util.plus.MysqlToH2ConverterTests.java

/**
 * Read file in class path/*  w w w . ja v a  2  s .  com*/
 * 
 * @param path path
 * @param joiner joiner
 * @return string in file
 */
private String readFileInClassPath(String path, String joiner) {

    try {

        return Files.lines(Paths.get(new ClassPathResource(path).getURI()), StandardCharsets.UTF_8)
                .collect(Collectors.joining(joiner));
    } catch (IOException e) {

        throw new IllegalStateException("Failed to read file", e);
    }
}

From source file:org.trustedanalytics.routermetrics.gathering.adapters.gorouter.GorouterMetrics.java

@Override
public String toString() {

    String latencyToString = latency.entrySet().stream()
            .map(x -> String.format("'%s'='%s'", x.getKey(), x.getValue())).collect(Collectors.joining(", "));

    return "GorouterMetrics{" + "host='" + host + "'," + "requestPerSec=" + requestPerSec + ", latency={"
            + latencyToString + "}" + "}";
}

From source file:io.syndesis.model.filter.RuleFilterStep.java

/**
 * Filter in the simple expression language.
 *///from w ww  .  ja  v a2  s .  c o  m
default String getFilterExpression() {
    final Map<String, String> props = getConfiguredProperties();

    if (!props.isEmpty()) {
        FilterPredicate predicate = getPredicate(props.get("predicate"));
        List<FilterRule> rules = extractRules(props.get("rules"));
        if (rules != null && !rules.isEmpty()) {
            return rules.stream().map(FilterRule::getFilterExpression)
                    .collect(Collectors.joining(predicate.getExpressionDelimiter()));
        }
        throw new IllegalStateException(
                String.format("No rules defined in step properties %s for rule filter step", props));
    }
    throw new IllegalStateException("No step properties defined for rule filter step");
}

From source file:org.flywaydb.core.internal.util.XMysqlToH2SqlReplacerTests.java

/**
 * Read class path file/*from   ww  w  . java 2s. c om*/
 * 
 * @param path path
 * @param joiner joiner
 * @return string in file
 */
private String readClassPathFile(String path, String joiner) {

    try {

        return Files.lines(Paths.get(new ClassPathResource(path).getURI()), StandardCharsets.UTF_8)
                .collect(Collectors.joining(joiner));
    } catch (IOException e) {

        throw new IllegalStateException("Failed to read class path file", e);
    }
}

From source file:com.heliosdecompiler.helios.controller.ProcessController.java

public Process launchProcess(ProcessBuilder launch) throws IOException {
    Process process = launch.start();
    try {/*from   w w w . j a  v  a  2  s .co  m*/
        lock.lock();
        processes.add(process);
    } finally {
        lock.unlock();
    }
    backgroundTaskHelper.submit(new BackgroundTask(
            Message.TASK_LAUNCH_PROCESS.format(launch.command().stream().collect(Collectors.joining(" "))),
            true, () -> {
                try {
                    process.waitFor();
                    if (!process.isAlive()) {
                        processes.remove(process);
                    }
                } catch (InterruptedException ignored) {
                }
            }, () -> {
                process.destroyForcibly();
                try {
                    lock.lock();
                    processes.remove(process);
                } finally {
                    lock.unlock();
                }
            }));
    return process;
}

From source file:io.schultz.dustin.service.VideoDownloaderService.java

public void download(final URL url, final OutputStream outputStream) {

    final String filename = downloaderProperties.getDownloadDir() + File.separator + "video-"
            + new Date().getTime() + ".mp4";

    List<String> cmd = new ArrayList<>();
    cmd.add(downloaderProperties.getDownloaderAbsolutePath());
    cmd.add(url.toString());//from   w  ww  .  j a  v a 2 s.c  o  m
    cmd.add("-f mp4");
    cmd.add("-o" + filename);

    if (log.isDebugEnabled()) {
        log.debug("Running command: {}", cmd.stream().collect(Collectors.joining(" ")));
    }

    try {
        Process p = new ProcessBuilder().command(cmd).start();
        int c;
        while ((c = p.getInputStream().read()) != -1) {
            outputStream.write(c);
            outputStream.flush();
        }
    } catch (IOException e) {
        log.error("Unable to download video at {}", url, e);
    }
}