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:flashcrawler.FlashCrawler.java

/**
 * @param args the command line arguments
 *///from   w  ww.ja  va  2 s . co  m
public static void main(String[] args) throws FileNotFoundException {
    Scanner scn = new Scanner(new File("input.txt"));
    ArrayList<String> ins = new ArrayList();
    while (scn.hasNextLine()) {
        String input = scn.nextLine();
        ins.add(input);
    }

    String URL;
    PrintWriter writer = null;
    writer = new PrintWriter(new FileOutputStream(new File("error-log.txt"), true));

    String File;
    for (String name : ins) {
        File offlinePath = new File("/games/" + name + ".swf");
        String onlinePath = "http://wsh.gamib.com/x/" + name + "/" + name + ".swf";
        System.out.println("Downloading " + onlinePath + " into " + offlinePath);
        URL url = null;
        try {
            System.out.println("...");
            url = new URL(onlinePath);
        } catch (MalformedURLException ex) {
            System.out.println("Failed to create url object");
            writer.println("Error when creating url: " + onlinePath + "\tname");
        }
        try {
            System.out.println("...");
            FileUtils.copyURLToFile(url, offlinePath);
            System.out.println("Success.");
        } catch (IOException ex) {
            System.out.println("Error when downloading game: " + offlinePath);
            writer.println("Error when downloading game: " + offlinePath);
        }

    }
    writer.close();
    System.out.println("Process complete!");
}

From source file:math2605.gn_log.java

/**
 * @param args the command line arguments
 *///from w ww. j  a  va  2s.c  om
public static void main(String[] args) {
    //get file name
    System.out.println("Please enter a file name:");
    Scanner scanner = new Scanner(System.in);
    String fileName = scanner.nextLine();
    List<String[]> pairs = new ArrayList<>();
    //get coordinate pairs and add to arraylist
    try {
        BufferedReader br = new BufferedReader(new FileReader(fileName));
        String line;
        while ((line = br.readLine()) != null) {
            String[] pair = line.split(",");
            pairs.add(pair);
        }
        br.close();
    } catch (Exception e) {
    }

    System.out.println("Please enter the value of a:");
    double a = scanner.nextInt();
    System.out.println("Please enter the value of b:");
    double b = scanner.nextInt();
    System.out.println("Please enter the value of c:");
    double c = scanner.nextInt();
    //init B, vector with 3 coordinates
    RealMatrix B = new Array2DRowRealMatrix(3, 1);
    B.setEntry(0, 0, a);
    B.setEntry(1, 0, b);
    B.setEntry(2, 0, c);

    System.out.println("Please enter the number of iteration for the Gauss-newton:");
    //init N, number of iterations
    int N = scanner.nextInt();

    //init r, vector of residuals
    RealMatrix r = new Array2DRowRealMatrix();
    setR(pairs, a, b, c, r);

    //init J, Jacobian of r
    RealMatrix J = new Array2DRowRealMatrix();
    setJ(pairs, a, b, c, r, J);

    System.out.println("J");
    System.out.println(J);
    System.out.println("r");
    System.out.println(r);

    RealMatrix sub = findQR(J, r);

    for (int i = N; i > 0; i--) {
        B = B.subtract(sub);
        double B0 = B.getEntry(0, 0);
        double B1 = B.getEntry(1, 0);
        double B2 = B.getEntry(2, 0);
        //CHANGE ABC TO USE B0, B1, B2
        setR(pairs, B0, B1, B2, r);
        setJ(pairs, B0, B1, B2, r, J);
    }
    System.out.println("B");
    System.out.println(B.toString());
}

From source file:math2605.gn_exp.java

/**
 * @param args the command line arguments
 *//*  ww  w  .  j  a  va 2 s . c o m*/
public static void main(String[] args) {
    //get file name
    System.out.println("Please enter a file name:");
    Scanner scanner = new Scanner(System.in);
    String fileName = scanner.nextLine();
    List<String[]> pairs = new ArrayList<>();
    //get coordinate pairs and add to arraylist
    try {
        BufferedReader br = new BufferedReader(new FileReader(fileName));
        String line;
        while ((line = br.readLine()) != null) {
            String[] pair = line.split(",");
            pairs.add(pair);
        }
        br.close();
    } catch (Exception e) {
    }

    System.out.println("Please enter the value of a:");
    double a = scanner.nextInt();
    System.out.println("Please enter the value of b:");
    double b = scanner.nextInt();
    System.out.println("Please enter the value of c:");
    double c = scanner.nextInt();
    //init B, vector with 3 coordinates
    RealMatrix B = new Array2DRowRealMatrix(3, 1);
    B.setEntry(0, 0, a);
    B.setEntry(1, 0, b);
    B.setEntry(2, 0, c);

    System.out.println("Please enter the number of iteration for the Gauss-newton:");
    //init N, number of iterations
    int N = scanner.nextInt();

    //init r, vector of residuals
    RealMatrix r = new Array2DRowRealMatrix();
    setR(pairs, a, b, c, r);

    //init J, Jacobian of r
    RealMatrix J = new Array2DRowRealMatrix();
    setJ(pairs, a, b, c, r, J);

    System.out.println("J");
    System.out.println(J);
    System.out.println("r");
    System.out.println(r);

    RealMatrix sub = findQR(J, r);

    for (int i = N; i > 0; i--) {
        B = B.subtract(sub);
        double B0 = B.getEntry(0, 0);
        double B1 = B.getEntry(1, 0);
        double B2 = B.getEntry(2, 0);
        //CHANGE ABC TO USE B0, B1, B2
        setR(pairs, B0, B1, B2, r);
        setJ(pairs, B0, B1, B2, r, J);
    }
    System.out.println("B");
    System.out.println(B.toString());

}

From source file:divconq.hub.Daemon.java

public static void main(String[] args) {
    try {/*from  w  w  w .  j  ava2s. c o  m*/
        Daemon.startService(args);

        try (Scanner scan = new Scanner(System.in)) {
            System.out.println("Press enter to end Daemon");
            scan.nextLine();
        }
    } catch (Exception x) {

    }

    Daemon.stopService(args);
}

From source file:Retirement.java

public static void main(String[] args) {
    // read inputs
    Scanner in = new Scanner(System.in);

    System.out.print("How much money do you need to retire? ");
    double goal = in.nextDouble();

    System.out.print("How much money will you contribute every year? ");
    double payment = in.nextDouble();

    System.out.print("Interest rate in %: ");
    double interestRate = in.nextDouble();

    double balance = 0;
    int years = 0;

    // update account balance while goal isn't reached
    while (balance < goal) {
        // add this year's payment and interest
        balance += payment;/*  w ww. jav a 2s.  c om*/
        double interest = balance * interestRate / 100;
        balance += interest;
        years++;
    }

    System.out.println("You can retire in " + years + " years.");
}

From source file:LotteryDrawing.java

public static void main(String[] args) {
    Scanner in = new Scanner(System.in);

    System.out.print("How many numbers do you need to draw? ");
    int k = in.nextInt();

    System.out.print("What is the highest number you can draw? ");
    int n = in.nextInt();

    // fill an array with numbers 1 2 3 . . . n
    int[] numbers = new int[n];
    for (int i = 0; i < numbers.length; i++)
        numbers[i] = i + 1;//from  ww w .j ava 2  s  .com

    // draw k numbers and put them into a second array
    int[] result = new int[k];
    for (int i = 0; i < result.length; i++) {
        // make a random index between 0 and n - 1
        int r = (int) (Math.random() * n);

        // pick the element at the random location
        result[i] = numbers[r];

        // move the last element into the random location
        numbers[r] = numbers[n - 1];
        n--;
    }

    // print the sorted array
    Arrays.sort(result);
    System.out.println("Bet the following combination. It'll make you rich!");
    for (int r : result)
        System.out.println(r);
}

From source file:BigIntegerTest.java

public static void main(String[] args) {
    Scanner in = new Scanner(System.in);

    System.out.print("How many numbers do you need to draw? ");
    int k = in.nextInt();

    System.out.print("What is the highest number you can draw? ");
    int n = in.nextInt();

    /*/* w  w w.  ja v  a2  s .c o m*/
     * compute binomial coefficient n*(n-1)*(n-2)*...*(n-k+1)/(1*2*3*...*k)
     */

    BigInteger lotteryOdds = BigInteger.valueOf(1);

    for (int i = 1; i <= k; i++)
        lotteryOdds = lotteryOdds.multiply(BigInteger.valueOf(n - i + 1)).divide(BigInteger.valueOf(i));

    System.out.println("Your odds are 1 in " + lotteryOdds + ". Good luck!");
}

From source file:fitmon.Client.java

public static void main(String[] args) throws IOException, ClientProtocolException, NoSuchAlgorithmException,
        InvalidKeyException, SAXException, ParserConfigurationException {
    Food food = null;//from w w w  . j a  v a2  s  . c  o m
    DietAPI dApi = new DietAPI();
    JDBCConnection jdbcCon = new JDBCConnection();
    ArrayList<Food> foodItems = dApi.getFood();
    Scanner scan = new Scanner(System.in);
    Calendar currentDate = Calendar.getInstance(); //Get the current date
    SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd"); //format it as per your requirement
    String dateNow = formatter.format(currentDate.getTime());
    System.out.println("Now the date is :=>  " + dateNow);
    for (int i = 0; i < foodItems.size(); i++) {
        food = foodItems.get(i);
        System.out.println("ID : " + food.getFoodID());
        System.out.println("servingID : " + food.getServingID());
        System.out.println("Name : " + food.getItemName());
        System.out.println("category : " + food.getCategory());
        System.out.println("Quantity : " + food.getQuantity());
        System.out.println("calories : " + food.getCalories());
        System.out.println("fat : " + food.getFat());
        System.out.println("carbs : " + food.getCarbs());
        System.out.println("protein : " + food.getProtein());
        System.out.println("fiber : " + food.getFiber());
        System.out.println("sodium : " + food.getSodium());
        System.out.println("sugar : " + food.getSugar());
        System.out.println("cholesterol : " + food.getCholesterol());
        System.out.println(
                "------------------------------------------------------------------------------------------------");

    }

    System.out.println("Choose a meal......");
    String mealType = scan.next();
    System.out.println("Choose an item......");
    String servingID = scan.next();
    for (int j = 0; j < foodItems.size(); j++) {
        if (foodItems.get(j).getServingID() == null ? servingID == null
                : foodItems.get(j).getServingID().equals(servingID)) {
            food = foodItems.get(j);
            break;
        }

    }
    Diet diet = new CustomizedDiet();
    diet.createDiet(food, mealType, dateNow);

}

From source file:aula1.Aula1.java

/**
 * @param args the command line arguments
 *//*from  ww  w .  ja  va  2 s .  c  o m*/
public static void main(String[] args) {
    Scanner dados = new Scanner(System.in);
    int escolha;
    double ini;
    double fim;
    String exp;
    String info;
    int sens = 0;
    boolean valida = true;

    do {
        System.out.println(
                "Decida a operao: 0 para montar grfico, 1 para calcular limite, 2 para calcular qualquer expresso");
        escolha = dados.nextInt();
        switch (escolha) {
        case 0:
            System.out.println("Informe o inicio do dominio");
            ini = dados.nextDouble();
            System.out.println("Informe o fim do dominio");
            fim = dados.nextDouble();
            System.out.println("Informe a quantidade de casas decimais desejadas: ");
            sens = dados.nextInt();
            System.out.println("Informe a expresso: ");
            exp = dados.next();
            double[] x = montaDominio(ini, fim, sens);
            calcula(x, exp);
            valida = false;
            break;
        case 1:
            System.out.println("Informe a expresso: ");
            exp = dados.next();
            System.out.println("Informe o ponto limite: ");
            info = dados.next();
            try {
                calculaLimite(exp, info);
            } catch (Exception ex) {
                System.out
                        .println("Erro: " + ex.getMessage() + "Tentativade aplcao do teorema do confronto");

            }
            valida = false;
            break;
        case 2:
            System.out.println("Informe a expresso:");
            info = dados.next();
            try {
                System.out.println(conversor(info, "0"));
            } catch (Exception ex) {
                System.out.println("Erro: " + ex.getMessage());
            }
            valida = false;
            break;
        default:
            System.out.println("Escolha invlida!");
            break;
        }
    } while (valida);

    //        Double[] vet = new Double[3];         
    //        vet = lerDados();
    //        montaDominio(vet[0], vet[1], vet[2].intValue());
    //        calculaLimite(3);
}

From source file:SetTest.java

public static void main(String[] args) {
    Set<String> words = new HashSet<String>(); // HashSet implements Set
    long totalTime = 0;

    Scanner in = new Scanner(System.in);
    while (in.hasNext()) {
        String word = in.next();//from   w w w.  jav a  2  s. c  om
        long callTime = System.currentTimeMillis();
        words.add(word);
        callTime = System.currentTimeMillis() - callTime;
        totalTime += callTime;
    }

    Iterator<String> iter = words.iterator();
    for (int i = 1; i <= 20 && iter.hasNext(); i++)
        System.out.println(iter.next());
    System.out.println(". . .");
    System.out.println(words.size() + " distinct words. " + totalTime + " milliseconds.");
}