Example usage for java.util Scanner Scanner

Introduction

In this page you can find the example usage for java.util Scanner Scanner.

Prototype

public Scanner(ReadableByteChannel source) 

Source Link

Document

Constructs a new Scanner that produces values scanned from the specified channel.

Usage

From source file:com.github.xbn.examples.lang.non_xbn.VerifyUserInputIsANumberWithIsNumber.java

public static final void main(String[] ignored) {

    int num = -1;
    boolean isNum = false;

    do {//from w w w  .  j  ava  2  s  .  com
        System.out.print("Number please: ");
        String strInput = (new Scanner(System.in)).next();
        if (!NumberUtils.isNumber(strInput)) {
            System.out.println(strInput + " is not a number. Try again.");
        } else {
            //Safe to convert
            num = Integer.parseInt(strInput);
            isNum = true;
        }
    } while (!isNum);

    System.out.println("Number: " + num);
}

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From source file:ScanXan.java

public static void main(String[] args) throws IOException {
    Scanner s = null;//from w  ww.j  a v a  2s  . com
    try {
        s = new Scanner(new BufferedReader(new FileReader("xanadu.txt")));

        while (s.hasNext()) {
            System.out.println(s.next());
        }
    } finally {
        if (s != null) {
            s.close();
        }
    }
}

---

From source file:bundestagswahl.benchmark.BWBenchmark.java

public static void main(String[] args) throws Exception {

    resultTime = new double[6];

    Scanner scanner = new Scanner(System.in);
    System.out.print("Please enter URL: ");
    serverUrl = scanner.nextLine();//w  w  w .ja v  a  2  s  .c om
    System.out.print("Please enter number of terminals: ");
    numberTerminals = scanner.nextInt();
    System.out.print("Please enter number of requests: ");
    numberRequests = scanner.nextInt();
    System.out.print("Please enter delay between two requests in seconds: ");
    requestDelay = scanner.nextDouble();
    scanner.close();

    PoolingClientConnectionManager cm = new PoolingClientConnectionManager();
    cm.setMaxTotal(numberTerminals);
    HttpClient httpclient = new DefaultHttpClient(cm);
    httpclient.getParams().setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 300000)
            .setIntParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 300000)
            .setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024)
            .setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true);
    try {
        final CountDownLatch latch = new CountDownLatch(numberTerminals);
        for (int i = 0; i < numberTerminals; i++) {
            BenchmarkTerminal terminal = new BenchmarkTerminal(httpclient, latch, serverUrl, numberRequests,
                    requestDelay);
            terminal.start();
        }
        latch.await();
        httpclient.getConnectionManager().shutdown();
    } finally {

    }

    printResultTimes();
    System.out.println(" ");
    System.out.println("Done");
}

---

From source file:com.frederikam.fredboat.bootloader.Bootloader.java

public static void main(String[] args) throws IOException, InterruptedException {
    OUTER: while (true) {
        InputStream is = new FileInputStream(new File("./bootloader.json"));
        Scanner scanner = new Scanner(is);
        JSONObject json = new JSONObject(scanner.useDelimiter("\\A").next());
        scanner.close();//from   ww  w .  ja va2 s  .  c om

        command = json.getJSONArray("command");
        jarName = json.getString("jarName");

        Process process = boot();
        process.waitFor();
        System.out.println("[BOOTLOADER] Bot exited with code " + process.exitValue());

        switch (process.exitValue()) {
        case ExitCodes.EXIT_CODE_UPDATE:
            System.out.println("[BOOTLOADER] Now updating...");
            update();
            break;
        case 130:
        case ExitCodes.EXIT_CODE_NORMAL:
            System.out.println("[BOOTLOADER] Now shutting down...");
            break OUTER;
        //SIGINT received or clean exit
        default:
            System.out.println("[BOOTLOADER] Now restarting..");
            break;
        }
    }
}

---

From source file:com.balero.test.Wizard.java

public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);

    System.out.println(""
            + ".-. .-')     ('-.                 ('-.  _  .-')                                _   .-')      .-')    \n"
            + "\\  ( OO )   ( OO ).-.           _(  OO)( \\( -O )                              ( '.( OO )_   ( OO ). \n"
            + " ;-----.\\   / . --. / ,--.     (,------.,------.  .-'),-----.          .-----. ,--.   ,--.)(_)---\\_) \n"
            + " | .-.  |   | \\-.  \\  |  |.-')  |  .---'|   /`. '( OO'  .-.  '        '  .--./ |   `.'   | /    _ |  \n"
            + " | '-' /_).-'-'  |  | |  | OO ) |  |    |  /  | |/   |  | |  |        |  |('-. |         | \\  :` `.  \n"
            + " | .-. `.  \\| |_.'  | |  |`-' |(|  '--. |  |_.' |\\_) |  |\\|  |       /_) |OO  )|  |'.'|  |  '..`''.) \n"
            + " | |  \\  |  |  .-.  |(|  '---.' |  .--' |  .  '.'  \\ |  | |  |       ||  |`-'| |  |   |  | .-._)   \\ \n"
            + " | '--'  /  |  | |  | |      |  |  `---.|  |\\  \\    `'  '-'  '      (_'  '--'\\ |  |   |  | \\       / \n"
            + " `------'   `--' `--' `------'  `------'`--' '--'     `-----'          `-----' `--'   `--'  `-----'  \n"
            + "                                                                                  Enterprise Edition\n");
    System.out.println("Welcome to Balero CMS Setup Wizard\n");
    System.out.println("Provide your Database configuration.\n");

    String dbuser;//from  w  w  w  .  j a  v a2s.co m
    System.out.print("Insert MySQL Username\n");
    dbuser = sc.nextLine();

    String dbpass;
    System.out.print("Insert MySQL Password\n");
    dbpass = sc.nextLine();

    String opt;
    System.out.println("The MIT License (MIT)\n" + "\n" + "Copyright (c) 2014 Balero CMS Enterprise Edition.\n"
            + "\n" + "Permission is hereby granted, free of charge, to any person obtaining a copy\n"
            + "of this software and associated documentation files (the \"Software\"), to deal\n"
            + "in the Software without restriction, including without limitation the rights\n"
            + "to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n"
            + "copies of the Software, and to permit persons to whom the Software is\n"
            + "furnished to do so, subject to the following conditions:\n" + "\n"
            + "The above copyright notice and this permission notice shall be included in\n"
            + "all copies or substantial portions of the Software.\n" + "\n"
            + "THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n"
            + "IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n"
            + "FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n"
            + "AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n"
            + "LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n"
            + "OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n" + "THE SOFTWARE.\n"
            + "Agree: Enter Decline: e");
    opt = sc.nextLine();
    exitWizard(opt);

    System.out.print("Setup wizard will create database tables\n" + "Continue: Enter or Exit: e\n");
    opt = sc.nextLine();
    exitWizard(opt);

    try {

        System.out.println("" + "     _( )_          _      Mounting CMS...\n" + "   _(     )_      _( )_\n"
                + "  (_________)   _(     )_\n" + "               (_________)\n"
                + "    0  1  0               \n" + "       1  0     0  1  0\n" + "          1       1  0");
        ;

        for (double progressPercentage = 0.0; progressPercentage < 1.0; progressPercentage += 0.01) {
            updateProgress(progressPercentage);
            Thread.sleep(100);
        }
    } catch (InterruptedException e) {

    }

}

---

From source file:com.chargebee.Application.DateFormat.java

public static void main(String[] args) throws IOException, Exception {
    Scanner sc = new Scanner(System.in);
    System.out.println("Input CSV File: ");
    String source = sc.nextLine();

    System.out.println("Input JSON File: ");
    String requirements = sc.nextLine();

    System.out.println("Output CSV File: ");
    String output = sc.nextLine();

    DateFormat df = new DateFormat();
    JSONObject jobj = MethodBank.readJsonObjectData(requirements);
    CSVParser parser = MethodBank.parserInitializer(source);
    CSVPrinter printer = MethodBank.printerInitializer(output);

    df.formatter(parser, printer, jobj);
    parser.close();//from ww  w. j  av a 2  s .  co  m
    printer.close();

}

---

From source file:com.thinkbiganalytics.kerberos.TestKerberosKinit.java

public static void main(String[] args) throws Exception {
    final TestKerberosKinit testKerberosKinit = new TestKerberosKinit();
    Scanner scanner = new Scanner(System.in);

    System.out.println(" ");
    System.out.print("Which environment are you in? Enter 1 for HDP or 2 for Cloudera: ");
    String environmentCode = scanner.nextLine();
    if (StringUtils.isEmpty(environmentCode)) {
        environmentCode = "1";
    }//w  w w  .jav  a2s. com

    String environment;
    switch (environmentCode) {
    case "1":
        environment = ENVIRONMENT_HDP;
        break;
    case "2":
        environment = ENVIRONMENT_CLOUDERA;
        break;
    default:
        throw new Exception("Invalid environment code");
    }

    System.out.println(" ");
    System.out.println(
            "Hit enter to default to: /etc/hadoop/conf/core-site.xml,/etc/hadoop/conf/hdfs-site.xml,/usr/hdp/current/hive-client/conf/hive-site.xml");
    System.out.print("Please enter the list of configuration resources: ");
    String configResources = scanner.nextLine();
    if (StringUtils.isEmpty(configResources)) {
        configResources = "/etc/hadoop/conf/core-site.xml,/etc/hadoop/conf/hdfs-site.xml,/usr/hdp/current/hive-client/conf/hive-site.xml";
    }

    System.out.println(" ");
    System.out.println("Hit enter to default to: /etc/security/keytabs/hive-thinkbig.headless.keytab");
    System.out.print("Please enter the keytab file location: ");
    String keytab = scanner.nextLine();
    if (StringUtils.isEmpty(keytab)) {
        keytab = "/etc/security/keytabs/hive-thinkbig.headless.keytab";
    }

    System.out.println(" ");
    System.out.println("Hit enter to default to: hive/sandbox.hortonworks.com@sandbox.hortonworks.com");
    System.out.print("Please enter the real user principal name: ");
    String realUserPrincipal = scanner.nextLine();
    if (StringUtils.isEmpty(realUserPrincipal)) {
        realUserPrincipal = "hive/sandbox.hortonworks.com@sandbox.hortonworks.com";
    }

    System.out.println(" ");
    System.out.println("Please enter Y/N (default is N)");
    System.out.print("Do you want to test with a proxy user: ");
    String proxyUser = scanner.nextLine();
    if (StringUtils.isEmpty(realUserPrincipal)) {
        proxyUser = "N";
    }

    System.out.println(" ");
    System.out.println("Hit enter to default to: hdfs://sandbox.hortonworks.com:8020");
    System.out.print("Please enter the HDFS URL: ");
    String hdfsUrl = scanner.nextLine();
    if (StringUtils.isEmpty(hdfsUrl)) {
        hdfsUrl = "hdfs://sandbox.hortonworks.com:8020";
    }

    System.out.println(" ");
    System.out.println("Hit enter to default to: jdbc:hive2://localhost:10000/default");
    System.out.print("Please enter the Hive base connection string: ");
    String hiveHost = scanner.nextLine();
    if (StringUtils.isEmpty(hiveHost)) {
        hiveHost = "jdbc:hive2://localhost:10000/default";
    }

    String proxyUserName = null;
    if ("Y".equalsIgnoreCase(proxyUser)) {
        System.out.println(" ");
        System.out.print("Please enter the proxy user: ");
        proxyUserName = scanner.next();
    }

    System.out.println(" ");
    System.out.println("Executing Kinit to generate a kerberos ticket");

    if ("Y".equalsIgnoreCase(proxyUser)) {
        System.out.println("Testing with the proxy user: " + proxyUserName);
        testKerberosKinit.testHdfsWithUserImpersonation(configResources, keytab, realUserPrincipal,
                proxyUserName, environment, hdfsUrl);

        //testKerberosKinit.testHiveJdbcConnectionWithUserImpersonation(configResources, keytab, realUserPrincipal, proxyUserName);
        testKerberosKinit.testHiveJdbcConnection(configResources, keytab, realUserPrincipal, proxyUserName,
                hiveHost);
    } else {
        System.out.println("No Proxy User");
        testKerberosKinit.testHdfsAsKerberosUser(configResources, keytab, realUserPrincipal, environment,
                hdfsUrl);
        testKerberosKinit.testHiveJdbcConnection(configResources, keytab, realUserPrincipal, null, hiveHost);
    }
}

---

From source file:drpc.BptiEnsembleQuery.java

public static void main(final String[] args) throws IOException, TException, DRPCExecutionException {
    if (args.length < 3) {
        System.err.println("Where are the arguments? args -- DrpcServer DrpcFunctionName folder");
        return;/* w  w w.j  a v  a 2s. co  m*/
    }

    final DRPCClient client = new DRPCClient(args[0], 3772, 1000000 /*timeout*/);
    final Queue<String> featureFiles = new ArrayDeque<String>();
    SpoutUtils.listFilesForFolder(new File(args[2]), featureFiles);

    Scanner scanner = new Scanner(featureFiles.peek());
    int i = 0;
    while (scanner.hasNextLine() && i++ < 1) {
        List<Map<String, List<Double>>> dict = SpoutUtils.pythonDictToJava(scanner.nextLine());
        for (Map<String, List<Double>> map : dict) {
            final Double[] features = map.get("chi1").toArray(new Double[0]);
            final Double[] moreFeatures = map.get("chi2").toArray(new Double[0]);
            final Double[] both = (Double[]) ArrayUtils.addAll(features, moreFeatures);
            final String parameters = serializeFeatureVector(ArrayUtils.toPrimitive(both));
            Logger.getAnonymousLogger().log(Level.INFO, runQuery(args[1], parameters, client));
        }
    }
    client.close();
}

---

From source file:de.dakror.scpuller.SCPuller.java

public static void main(String[] args) {
    new File(System.getProperty("user.home") + "/.dakror/SCPuller").mkdirs();
    new File(System.getProperty("user.home") + "/.dakror/SCPuller/download").mkdir();
    Scanner scanner = new Scanner(System.in);

    loadDownloadedSongs();//  w w w .  j  a  va2s.  com

    try {
        while (true) {
            String line = scanner.nextLine().trim();
            download(line);

            saveDownloadedSongs();
        }
    } finally {
        scanner.close();
    }
}

---

From source file:com.haythem.integration.Main.java

/**
 * Load the Spring Integration Application Context
 *
 * @param args - command line arguments//from  w w w .ja va  2s  .  c o m
 */
public static void main(final String... args) {

    final Scanner scanner = new Scanner(System.in);

    System.out.println("\n========================================================="
            + "\n                                                         "
            + "\n    Welcome to the Spring Integration                    "
            + "\n          TCP-Client-Server Sample!                      "
            + "\n                                                         "
            + "\n    For more information please visit:                   "
            + "\n    http://www.springintegration.org/                    "
            + "\n                                                         "
            + "\n=========================================================");

    final GenericXmlApplicationContext context = Main.setupContext();
    final SimpleGateway gateway = context.getBean(SimpleGateway.class);
    final AbstractServerConnectionFactory crLfServer = context.getBean(AbstractServerConnectionFactory.class);

    System.out.print("Waiting for server to accept connections...");
    TestingUtilities.waitListening(crLfServer, 10000L);
    System.out.println("running.\n\n");

    System.out.println("Please enter some text and press <enter>: ");
    System.out.println("\tNote:");
    System.out.println("\t- Entering FAIL will create an exception");
    System.out.println("\t- Entering q will quit the application");
    System.out.print("\n");
    System.out.println("\t--> Please also check out the other samples, " + "that are provided as JUnit tests.");
    System.out.println("\t--> You can also connect to the server on port '" + crLfServer.getPort()
            + "' using Telnet.\n\n");

    while (true) {

        final String input = scanner.nextLine();

        if ("q".equals(input.trim())) {
            break;
        } else {
            final String result = gateway.send(input);
            System.out.println(result);
        }
    }

    System.out.println("Exiting application...bye.");
    System.exit(0);

}

---

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