Example usage for java.util Scanner nextLine

Introduction

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

Prototype

public String nextLine() 

Source Link

Document

Advances this scanner past the current line and returns the input that was skipped.

Usage

From source file:RegExTest.java

public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    System.out.println("Enter pattern: ");
    String patternString = in.nextLine();

    Pattern pattern = null;/*from w  w w. java  2 s.c  o  m*/
    try {
        pattern = Pattern.compile(patternString);
    } catch (PatternSyntaxException e) {
        System.out.println("Pattern syntax error");
        System.exit(1);
    }

    while (true) {
        System.out.println("Enter string to match: ");
        String input = in.nextLine();
        if (input == null || input.equals(""))
            return;
        Matcher matcher = pattern.matcher(input);
        if (matcher.matches()) {
            System.out.println("Match");
            int g = matcher.groupCount();
            if (g > 0) {
                for (int i = 0; i < input.length(); i++) {
                    for (int j = 1; j <= g; j++)
                        if (i == matcher.start(j))
                            System.out.print('(');
                    System.out.print(input.charAt(i));
                    for (int j = 1; j <= g; j++)
                        if (i + 1 == matcher.end(j))
                            System.out.print(')');
                }
                System.out.println();
            }
        } else
            System.out.println("No match");
    }
}

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From source file:eu.openanalytics.rsb.SuiteITCase.java

/**
 * To help with any sort of manual testing.
 *///  w w w . ja va2s. c  o m
public static void main(final String[] args) throws Exception {
    setupTestSuite();

    System.out.println("Type ENTER to stop testing...");
    final Scanner scanner = new Scanner(System.in);
    scanner.nextLine();
    scanner.close();

    teardownTestSuite();
}

---

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0";

    Scanner scanner = new Scanner(s);

    // check if the scanner has a token
    System.out.println(scanner.hasNext());

    // print the rest of the string
    System.out.println(scanner.nextLine());

    // check if the scanner has a token after printing the line
    System.out.println(scanner.hasNext());

    scanner.close();/*from www  .  j a va2 s.  c  o  m*/
}

---

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();
    System.out.print("Please enter number of terminals: ");
    numberTerminals = scanner.nextInt();
    System.out.print("Please enter number of requests: ");
    numberRequests = scanner.nextInt();//from w  w  w  . ja v  a  2  s  . c om
    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:Main.java

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

    do {/*from  w  w w.j a va2  s  . c om*/
        System.out.println("Welcome to Java Programming!");
        System.out.println("Print Again? (y/n)");
        confirm = input.nextLine();
    } while (confirm.equalsIgnoreCase("y"));
}

---

From source file:math2605.gn_log.java

/**
 * @param args the command line arguments
 *//*from ww  w  .  j av  a2s. co 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:math2605.gn_exp.java

/**
 * @param args the command line arguments
 *///from w  w w.ja va2s .  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_qua.java

/**
 * @param args the command line arguments
 *//* ww w  .  j  a  va  2  s. co  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(e.getMessage());
    }

    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(pairs.size(), 1);
    setR(pairs, a, b, c, r);

    //init J, Jacobian of r
    RealMatrix J = new Array2DRowRealMatrix(pairs.size(), 3);
    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:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0";

    Scanner scanner = new Scanner(s);

    // find a pattern of any letter plus "com"
    System.out.println(scanner.findInLine(Pattern.compile(".com")));

    // print the next line of the string
    System.out.println(scanner.nextLine());

    scanner.close();/*from  www  .ja  va  2  s  .c o  m*/
}

---

From source file:irckafka.ChatApp.java

public static void main(String[] args) {

    groupId = RandomStringUtils.random(8, true, true);

    boolean isOnline = true;

    Scanner in = new Scanner(System.in);
    while (isOnline) {

        String[] input = in.nextLine().split(" ");
        String command = input[0].toLowerCase();

        switch (command) {
        case "/nick":
            if (input.length >= 2) {
                nickname = input[1];//from w  ww  . ja va 2 s  .co  m
                System.out.println("your nickname is " + nickname);
            } else {
                System.out.println("write nick name please!");
            }
            break;
        case "/join":
            if (input.length >= 2) {
                KafkaConsumer consume = new KafkaConsumer(groupId, input[1]);
                consume.start();

                channelGroup.put(input[1], consume);
            } else {
                System.out.println("write channel name please!");
            }
            break;
        case "/leave":
            if (input.length >= 2) {
                if (channelGroup.containsKey(input[1])) {
                    KafkaConsumer consume = channelGroup.get(input[1]);
                    consume.shutdown();
                    channelGroup.remove(input[1]);
                    System.out.println("your leave channel " + input[1]);
                } else {
                    System.out.println("wrong channel name!!");
                }
            } else {
                System.out.println("write channel name please!");
            }
            break;
        case "/exit":
            System.out.println("bye");
            System.exit(0);
            break;
        default: //broadcast
            if (command.contains("@")) {
                String channelname = command.substring(1);
                KafkaProducer produce = new KafkaProducer();
                if (channelGroup.containsKey(channelname)) {
                    String message = "";
                    for (int i = 1; i < input.length; i++) {
                        message += input[i] + " ";
                    }
                    produce.sendMessage(channelname, message, nickname);
                }
                produce.closeConnection();
            } else {
                String message = "";
                for (int i = 0; i < input.length; i++) {
                    message += input[i] + " ";
                }

                KafkaProducer produce = new KafkaProducer();
                for (String cList : channelGroup.keySet()) {
                    produce.sendMessage(cList, message, nickname);
                }
                produce.closeConnection();
            }
        }
    }
}

---

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