Example usage for java.util Scanner nextInt

Introduction

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

Prototype

public int nextInt()

Source Link

Document

Scans the next token of the input as an int .

Usage

From source file:TextFileTest.java

/**
 * Reads an array of employees from a scanner
 * @param in the scanner/*w  w  w.  j  a  v a 2 s .co  m*/
 * @return the array of employees
 */
private static Employee[] readData(Scanner in) {
    // retrieve the array size
    int n = in.nextInt();
    in.nextLine(); // consume newline

    Employee[] employees = new Employee[n];
    for (int i = 0; i < n; i++) {
        employees[i] = new Employee();
        employees[i].readData(in);
    }
    return employees;
}

From source file:Matrix_Operations.java

public static int getRowsNumberFromUser() {
    Scanner keyboard = new Scanner(System.in);
    //Allow user to enter number of rows
    int rows;/*from ww w .j  a v  a  2  s  . co m*/
    System.out.print("Enter rows: ");

    rows = keyboard.nextInt();
    return rows;

}

From source file:Matrix_Operations.java

public static int getColumnNumberFromUser() {
    Scanner keyboard = new Scanner(System.in);
    //Allow user to enter number of columns
    int columns;/*w  ww . j  a v a 2s.  c  om*/
    System.out.print("Enter columns: ");

    columns = keyboard.nextInt();

    return columns;

}

From source file:formatMessage.VerifyInputScanner.java

public static int verifyInt() {

    while (true) {
        Scanner input = new Scanner(System.in);
        try {//from   w  w w .  java  2 s .  com
            int verified = input.nextInt();

            return verified;

        } catch (InputMismatchException e) {
            System.out.println("Geen geldig nummer. Probeer opnieuw.");

        }
    }
}

From source file:jfractus.app.Main.java

private static void parseSize(String sizeStr, Dimension dim)
        throws ArgumentParseException, BadValueOfArgumentException {
    Scanner scanner = new Scanner(sizeStr);
    scanner.useLocale(Locale.ENGLISH);
    scanner.useDelimiter("x");

    int outWidth = 0, outHeight = 0;
    try {/* www . j a v  a  2s.com*/
        outWidth = scanner.nextInt();
        outHeight = scanner.nextInt();

        if (outWidth < 0 || outHeight < 0)
            throw new BadValueOfArgumentException("Bad value of argument");
    } catch (InputMismatchException e) {
        throw new ArgumentParseException("Command line parse exception");
    } catch (NoSuchElementException e) {
        throw new ArgumentParseException("Command line parse exception");
    }

    if (scanner.hasNext())
        throw new ArgumentParseException("Command line parse exception");

    dim.setSize(outWidth, outHeight);
}

From source file:org.wise.WISE.java

private static int mainMenuPrompt() {
    Scanner reader = new Scanner(System.in);
    System.out.println("\nAvailable actions:\n" + "[0] Reset WISE (database & curriculum) to initial state\n"
            + "[1] Exit\n" + "Enter number:");
    try {//www .  j  a  v  a2  s .  co m
        //get user input
        return reader.nextInt();
    } catch (InputMismatchException ime) {
        return mainMenuPrompt();
    }
}

From source file:IO.java

public static int[] readIntVec(File file, int nData) {
    int[] data = new int[nData];
    try {/*  w  w w .ja  v  a 2  s  .c  om*/
        Scanner sc = new Scanner(file);
        sc.useDelimiter(",|\\n");

        for (int i = 0; i < nData; i++) {
            data[i] = sc.nextInt();
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    return data;
}

From source file:org.apache.bookkeeper.bookie.FileSystemUpgrade.java

private static int detectPreviousVersion(File directory) throws IOException {
    String[] files = directory.list(BOOKIE_FILES_FILTER);
    File v2versionFile = new File(directory, BookKeeperConstants.VERSION_FILENAME);
    if ((files == null || files.length == 0) && !v2versionFile.exists()) { // no old data, so we're ok
        return Cookie.CURRENT_COOKIE_LAYOUT_VERSION;
    }/* w w  w .j  a  v  a  2  s. c o m*/

    if (!v2versionFile.exists()) {
        return 1;
    }
    Scanner s = new Scanner(v2versionFile, UTF_8.name());
    try {
        return s.nextInt();
    } catch (NoSuchElementException nse) {
        LOG.error("Couldn't parse version file " + v2versionFile, nse);
        throw new IOException("Couldn't parse version file", nse);
    } catch (IllegalStateException ise) {
        LOG.error("Error reading file " + v2versionFile, ise);
        throw new IOException("Error reading version file", ise);
    } finally {
        s.close();
    }
}

From source file:testing.test.java

private static void testIFSExtraction() {
    String[] coordIndexArray = null;
    String coordIndex = "0 1 2 3 -1";
    String points = "-1 -1 1 1 -1 1 1 1 1 -1 1 1 1 1 -1 -1 1 -1 -1 -1 -1 1 -1 -1";
    List totalPointParts = null;/*from w  w w. j a va 2s  .  co m*/
    coordIndex = coordIndex.replaceAll("\\r|\\n", " ").trim().replaceAll(" +", " ").replaceAll(",", "");
    System.out.println(coordIndex);
    points = points.replaceAll("\\r|\\n", " ").trim().replaceAll(" +", " ").replaceAll(",", "");
    System.out.println(points);
    Scanner sc = new Scanner(coordIndex).useDelimiter(" ");
    int maxCoordIndex = 0;
    while (sc.hasNextInt()) {
        int thisVal = sc.nextInt();
        if (thisVal > maxCoordIndex) {
            maxCoordIndex = thisVal;
        }
    }
    System.out.println("maxCoordIndex: " + maxCoordIndex);

    totalPointParts = new ArrayList();
    totalPointParts = getPointParts(points, maxCoordIndex);

    if (coordIndex.contains("-1")) {
        coordIndex = coordIndex.substring(0, coordIndex.lastIndexOf("-1"));
        coordIndexArray = coordIndex.split(" -1 ");
    } else {
        coordIndexArray = new String[1];
        coordIndexArray[0] = coordIndex;
    }

    System.out.println("coordIndexArray");
    System.out.println("coordIndexArray.length: " + coordIndexArray.length);
    for (int i = 0; i < coordIndexArray.length; i++) {

        System.out.println(i + ": " + coordIndexArray[i]);
    }
    System.out.println("totalPointsParts");
    for (int j = 0; j < totalPointParts.size(); j++) {

        System.out.println(j + ": " + totalPointParts.get(j));
    }
}

From source file:MainProgram.MainProgram.java

public static void registrationMain(String courseNumber) throws InterruptedException, IOException {
    System.out.println("Web driver starts...");
    String passwordString = String.copyValueOf(MainFrameProgram.pennPassField.getPassword());
    int semesterNum = Integer.parseInt(MainFrameProgram.semesterComboBox.getSelectedItem().toString());
    WebDriver_Registration.courseRegistration(MainFrameProgram.pennIDTextField.getText(), passwordString,
            courseNumber, semesterNum, MainFrameProgram.dropCheckBox.isSelected());
    Scanner sc = new Scanner(System.in);
    int i = sc.nextInt();

}