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:ReflectionTest.java

public static void main(String[] args) {
    // read class name from command line args or user input
    String name;/*from   www .  j a  va 2s  .c om*/
    if (args.length > 0)
        name = args[0];
    else {
        Scanner in = new Scanner(System.in);
        System.out.println("Enter class name (e.g. java.util.Date): ");
        name = in.next();
    }

    try {
        // print class name and superclass name (if != Object)
        Class cl = Class.forName(name);
        Class supercl = cl.getSuperclass();
        String modifiers = Modifier.toString(cl.getModifiers());
        if (modifiers.length() > 0)
            System.out.print(modifiers + " ");
        System.out.print("class " + name);
        if (supercl != null && supercl != Object.class)
            System.out.print(" extends " + supercl.getName());

        System.out.print("\n{\n");
        printConstructors(cl);
        System.out.println();
        printMethods(cl);
        System.out.println();
        printFields(cl);
        System.out.println("}");
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    System.exit(0);
}

---

From source file:id3Crawler.java

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

    //Input for the directory to be searched.
    System.out.println("Please enter a directory: ");
    Scanner scanner = new Scanner(System.in);
    String input = scanner.nextLine();

    //Start a timer to calculate runtime
    startTime = System.currentTimeMillis();

    System.out.println("Starting scan...");

    //Files for output
    PrintWriter pw1 = new PrintWriter(new FileWriter("C:/Users/gbob3_000/Desktop/id3CrawlerOutput/Song.txt"));
    PrintWriter pw2 = new PrintWriter(new FileWriter("C:/Users/gbob3_000/Desktop/id3CrawlerOutput/Artist.txt"));
    PrintWriter pw3 = new PrintWriter(new FileWriter("C:/Users/gbob3_000/Desktop/id3CrawlerOutput/Album.txt"));
    PrintWriter pw4 = new PrintWriter(
            new FileWriter("C:/Users/gbob3_000/Desktop/id3CrawlerOutput/PerformedBy.txt"));
    PrintWriter pw5 = new PrintWriter(
            new FileWriter("C:/Users/gbob3_000/Desktop/id3CrawlerOutput/TrackOf.txt"));
    PrintWriter pw6 = new PrintWriter(
            new FileWriter("C:/Users/gbob3_000/Desktop/id3CrawlerOutput/CreatedBy.txt"));

    //This is used for creating IDs for artists, songs, albums.
    int idCounter = 0;

    //This is used to prevent duplicate artists
    String previousArtist = " ";
    String currentArtist;/*from  ww w .  j  av a2 s . c  o  m*/
    int artistID = 0;

    //This is used to prevent duplicate albums
    String previousAlbum = " ";
    String currentAlbum;
    int albumID = 0;

    //This array holds valid extensions to iterate through
    String[] extensions = new String[] { "mp3" };

    //iterate through all files in a directory
    Iterator<File> it = FileUtils.iterateFiles(new File(input), extensions, true);
    while (it.hasNext()) {

        //open the next file
        File file = it.next();

        //instantiate an mp3file object with the opened file
        MP3 song = GetMP3(file);

        //pass the song through SongInfo and return the required information
        SongInfo info = new SongInfo(song);

        //This is used to prevent duplicate artists/albums
        currentArtist = info.getArtistInfo();
        currentAlbum = info.getAlbumInfo();

        //Append the song information to the end of a text file
        pw1.println(idCounter + "\t" + info.getTitleInfo());

        //This prevents duplicates of artists
        if (!(currentArtist.equals(previousArtist))) {
            pw2.println(idCounter + "\t" + info.getArtistInfo());
            previousArtist = currentArtist;
            artistID = idCounter;
        }

        //This prevents duplicates of albums
        if (!(currentAlbum.equals(previousAlbum))) {
            pw3.println(idCounter + "\t" + info.getAlbumInfo());
            previousAlbum = currentAlbum;
            albumID = idCounter;

            //This formats the IDs for a "CreatedBy" relationship table
            pw6.println(artistID + "\t" + albumID);
        }

        //This formats the IDs for a "PerformedBy" relationship table
        pw4.println(idCounter + "\t" + artistID);

        //This formats the IDs for a "TrackOf" relationship table
        pw5.println(idCounter + "\t" + albumID);

        idCounter++;
        songCounter++;

    }
    scanner.close();
    pw1.close();
    pw2.close();
    pw3.close();
    pw4.close();
    pw5.close();
    pw6.close();

    System.out.println("Scan took " + ((System.currentTimeMillis() - startTime) / 1000.0) + " seconds to scan "
            + songCounter + " items!");

}

---

From source file:com.grayfox.server.Program.java

public static void main(String[] args) {
    try (AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(
            MainConfig.class)) {
        new Program().run(applicationContext, new Scanner(System.in));
    } catch (Exception ex) {
        LOGGER.error("Error during execution", ex);
    }//from  www . j  a v  a  2s  .  com
}

---

From source file:com.richard.memorystore.udp.UDPServer.java

/**
 * Load the Spring Integration Application Context
 *
 * @param args - command line arguments/*w  w w  .j a  va2s. c  om*/
 */
public static void main(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 = UDPServer.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);

}

---

From source file:org.bitcoinrt.Main.java

/**
 * Load the Spring Integration Application Context
 *
 * @param args - command line arguments// w w w  . j  av a  2 s .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 Bitcoin-rt Sample! "
            + "\n                                                         "
            + "\n=========================================================");

    System.out.println("Which WebSocket Client would you like to use? <enter>: ");
    System.out.println("\t1. Use Sonatype's Async HTTP Client implementation");
    System.out.println("\t2. Use Jetty's WebSocket client implementation");
    System.out.println("\t3. Use a Dummy client");

    System.out.println("\tq. Quit the application");
    System.out.print("Enter you choice: ");

    final GenericXmlApplicationContext context = new GenericXmlApplicationContext();

    while (true) {
        final String input = scanner.nextLine();

        if ("1".equals(input.trim())) {
            context.getEnvironment().setActiveProfiles("default");
            break;
        } else if ("2".equals(input.trim())) {
            context.getEnvironment().setActiveProfiles("jetty");
            break;
        } else if ("3".equals(input.trim())) {
            context.getEnvironment().setActiveProfiles("dummy");
            break;
        } else if ("q".equals(input.trim())) {
            System.out.println("Exiting application...bye.");
            System.exit(0);
        } else {
            System.out.println("Invalid choice\n\n");
            System.out.print("Enter you choice: ");
        }
    }

    context.load("classpath:META-INF/spring/integration/*-context.xml");
    context.registerShutdownHook();
    context.refresh();

    final ConnectionBroker connectionBroker = context.getBean(ConnectionBroker.class);

    if (LOGGER.isInfoEnabled()) {
        LOGGER.info("\n========================================================="
                + "\n                                                         "
                + "\n    Please press 'q + Enter' to quit the application.    "
                + "\n    For statistical information press 'i + Enter'.       "
                + "\n                                                         "
                + "\n    In your browser open:                                "
                + "\n    file:///.../src/main/webapp/index.html               "
                + "\n=========================================================");
    }

    while (true) {

        final String input = scanner.nextLine();

        if ("q".equals(input.trim())) {
            break;
        } else if ("i".equals(input.trim())) {
            LOGGER.info("\n========================================================="
                    + "\n                                                         "
                    + "\n Number of connected clients: " + connectionBroker.connectedClients()
                    + "\n                                                         "
                    + "\n=========================================================");
        }

    }

    if (LOGGER.isInfoEnabled()) {
        LOGGER.info("Exiting application...bye.");
    }

    context.close();
    System.exit(0);

}

---

From source file:com.hsbc.srbp.commonMsg.test.Main.java

/**
 * Load the Spring Integration Application Context
 *
 * @param args - command line arguments//w  ww.j  a v a  2 s.c  om
 */
public static void main(final String... args) {

    final AbstractApplicationContext context = new ClassPathXmlApplicationContext(
            "jdbcInboundApplicationContext.xml");

    context.registerShutdownHook();

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

    final CommonMessageService commonMessageService = context.getBean(CommonMessageService.class);

    System.out.println("\n========================================================="
            + "\n                                                         "
            + "\n    Please press 'q + Enter' to quit the application.    "
            + "\n                                                         "
            + "\n=========================================================");

    System.out.println("Please enter a choice and press <enter>: ");
    System.out.println("\t1. Create a new message detail");
    System.out.println("\tq. Quit the application");
    System.out.print("Enter you choice: ");
    while (true) {
        final String input = scanner.nextLine();
        if ("1".equals(input.trim())) {
            createMessageDetails(scanner, commonMessageService, context);
        } else if ("q".equals(input.trim())) {
            break;
        } else {
            System.out.println("Invalid choice\n\n");
        }

        System.out.println("Please enter a choice and press <enter>: ");
        System.out.println("\t1. Create a new message detail");
        System.out.println("\tq. Quit the application");
        System.out.print("Enter you choice: ");
    }

    System.out.println("Exiting application....");

    System.exit(0);

}

---

From source file:GenericReflectionTest.java

public static void main(String[] args) {
    // read class name from command line args or user input
    String name;//from w  w w  .j  av a 2 s . c  o  m
    if (args.length > 0)
        name = args[0];
    else {
        Scanner in = new Scanner(System.in);
        System.out.println("Enter class name (e.g. java.util.Collections): ");
        name = in.next();
    }

    try {
        // print generic info for class and public methods
        Class<?> cl = Class.forName(name);
        printClass(cl);
        for (Method m : cl.getDeclaredMethods())
            printMethod(m);
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
}

---

From source file:com.envirover.spl.SPLGroundControl.java

public static void main(String[] args) {
    try {//from ww  w .  java2  s  . co m
        SPLDaemon daemon = new SPLDaemon();

        daemon.init(new SPLDaemonContext(args));

        daemon.start();

        System.out.println("Enter 'stop' to exit the program.");

        Scanner scanner = new Scanner(System.in);

        String str;
        while (!(str = scanner.next()).equalsIgnoreCase("stop")) {
            //Just echo the user input for now.
            System.out.println(str);
        }

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

        scanner.close();

        daemon.stop();
        daemon.destroy();

        System.out.println("Done.");
        System.exit(0);
    } catch (Exception ex) {
        System.out.println(ex.getMessage());
    }
}

---

From source file:cit360.sandbox.CIT360SandBox.java

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

    Scanner input = new Scanner(System.in);
    System.out.println("What is your name?");
    CIT360SandBox.firstName = input.next();

    System.out.println("Welcome " + firstName + "!");

    CIT360SandBox.App.mainMenu();//from  www  .j  av a2s  . co m

}

---

From source file:bankconsoleapp.console.Main.java

/**
 * @param args the command line arguments
 */// w  w w  . j  a  v  a 2  s. c o  m
public static void main(String[] args) {

    //Injecting applicationContext to main
    ApplicationContext context = new ClassPathXmlApplicationContext("bankconsoleapp/applicationContext.xml");

    EmployeeService eS = context.getBean("EmployeeService", EmployeeService.class);
    CustomerService cS = context.getBean("CustomerService", CustomerService.class);
    SavingService sS = context.getBean("SavingService", SavingService.class);

    String userName, pass;
    Scanner in = new Scanner(System.in);
    boolean user = false;
    boolean savingRedo = false;

    do {

        System.out.println("Enter Employee ID:");
        userName = in.nextLine();
        for (Employee emp : eS.getAllEmp()) {
            if (userName.equals(emp.geteID())) {
                System.out.println("Password:");
                pass = in.nextLine();
                for (Employee em : eS.getAllEmp()) {
                    if (pass.equals(em.getPassword())) {

                        user = true;
                    }
                }
            }
        }

    } while (!user);

    long start = System.currentTimeMillis();
    long end = start + 60 * 1000; // 60 seconds * 1000 ms/sec
    int operation = 0;
    int userChoice;

    boolean quit = false;
    do {
        System.out.println("ACME Bank Saving System:");
        System.out.println("------------------------");
        System.out.println("1. Create Customer & Saving Account");
        System.out.println("2. Deposit Money");
        System.out.println("3. Withdraw Money");
        System.out.println("4. View Balance");
        System.out.println("5. Quit");
        System.out.print("Operation count: " + operation + "(Shut down at 5)");
        userChoice = in.nextInt();
        switch (userChoice) {
        case 1:

            //create customer, then saving account regard to existing customer( maximum 2 SA per Customer)
            System.out.println("Create Customer :");
            String FirstN, LastN, DoB, accNum, answer;

            Scanner sc = new Scanner(System.in);
            Customer c = new Customer();
            int saID = 0;

            System.out.println("Enter First Name:");
            FirstN = sc.nextLine();
            c.setFname(FirstN);
            System.out.println("Enter Last Name:");
            LastN = sc.nextLine();
            c.setLname(LastN);
            System.out.println("Enter Date of Birth:");
            DoB = sc.nextLine();
            c.setDoB(DoB);

            do {

                System.out.println("Creating saving acount, Enter Account Number:");
                accNum = sc.nextLine();
                c.setSA(accNum);
                c.setSavingAccounts(c.getSA());
                saID++;
                System.out.println("Create another SA? Y/N?");
                answer = sc.nextLine();
                if (answer.equals("n")) {
                    savingRedo = true;
                }
                if (saID == 2) {
                    System.out.println("Maximum Saving account reached!");
                }
            } while (!savingRedo && saID != 2);

            cS.createCustomer(c);
            operation++;

            break;
        case 2:
            // deposit

            String acNum;
            int amt;
            Scanner sc1 = new Scanner(System.in);
            System.out.println("Enter Saving Account number u wish to do deposit.");
            acNum = sc1.nextLine();
            System.out.println("Enter amount :");
            amt = sc1.nextInt();

            sS.deposit(acNum, amt);
            operation++;

            break;
        case 3:
            String acNums;
            int amts;
            Scanner sc2 = new Scanner(System.in);
            System.out.println("Enter Saving Account number u wish to do withdraw.");
            acNums = sc2.nextLine();
            System.out.println("Enter amount :");
            amts = sc2.nextInt();

            sS.withdraw(acNums, amts);
            operation++;
            break;

        case 4:
            // view
            System.out.println("Saving Account Balance:");
            System.out.println(sS.getAllSA());
            operation++;
            break;

        case 5:
            quit = true;
            break;
        default:
            System.out.println("Wrong choice.");
            break;
        }
        System.out.println();
        if (operation == 5) {
            System.out.println("5 operation reached, System shutdown.");
        }
        if (System.currentTimeMillis() > end) {
            System.out.println("Session Expired.");
        }
    } while (!quit && operation != 5 && System.currentTimeMillis() < end);
    System.out.println("Bye!");

}

---

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