Example usage for java.util Scanner nextLine

List of usage examples for java.util Scanner nextLine

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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:Main.java

public static float[][] readMatrix(String path) throws FileNotFoundException {
    int n = 0, p = 0;
    System.err.println("Load matrix from " + path);
    Scanner sc = new Scanner(new BufferedReader(new FileReader(path)));
    while (sc.hasNext()) {
        String line = sc.nextLine();
        if (line.startsWith("%")) {
            System.err.println(line);
        } else {//from w w w  . ja  v a  2  s. c  o  m
            String[] dim = line.split(" ");
            n = Integer.parseInt(dim[0]);
            p = Integer.parseInt(dim[1]);
            System.err.println("num rows: " + n + "\n" + "num cols: " + p);
            break;
        }
    }
    int count = 0;
    float[][] mat = new float[p][n];
    int row = 0, col = 0;
    while (sc.hasNextLine()) {
        String line = sc.nextLine();
        if (line.isEmpty()) {
            break;
        }
        Float val = Float.parseFloat(line);
        mat[col][row] = val;
        row++;
        if (row == n) {
            row = 0;
            col++;
        }
        count++;
    }
    if (count != n * p) {
        System.err.println("Parse fail: not enough elements. num rows: " + n + "\n" + "num cols: " + p
                + "\n nun elements: " + count);
        return null;
    }
    System.err.println("Done.");
    return mat;
}

From source file:Main.java

private static StringReader fromStreamToStringReader(InputStream inputStream, String encoding) {
    StringBuilder content = new StringBuilder();

    Scanner scanner = null;
    try {//from w  w  w  .ja v  a2s  .  co  m
        scanner = new Scanner(inputStream, encoding);

        while (scanner.hasNextLine()) {
            content.append(scanner.nextLine()).append("\n");
        }
    } finally {
        if (scanner != null) {
            scanner.close();
        }
    }

    return new StringReader(content.toString());
}

From source file:com.hortonworks.registries.storage.tool.TablesInitializer.java

private static void doExecuteDrop(SQLScriptRunner sqlScriptRunner,
        StorageProviderConfiguration storageProperties, String scriptRootPath) throws Exception {
    System.out.println("The operation will drop any existing tables.");
    System.out.print("Are you sure you want to proceed. (y/n)?");
    Scanner scan = new Scanner(System.in);
    String line = scan.nextLine();
    System.out.println();//ww  w  .j av a2 s .  co  m

    Boolean proceed = BooleanUtils.toBooleanObject(line);
    if (!BooleanUtils.toBoolean(proceed)) {
        System.exit(0);
    }

    String scriptPath = scriptRootPath + File.separator + storageProperties.getDbType() + File.separator
            + DROP_SCRIPT_FILE_NAME;

    doExecute(sqlScriptRunner, scriptPath);
}

From source file:Main.java

public static String readTxtFile(String filePath) {
    File file = new File(filePath);
    if (file == null || !file.exists()) {
        return null;
    }/*from   w  w  w .ja  v a  2  s  . c o  m*/
    try {
        Scanner scanner = new Scanner(file);
        StringBuilder sb = new StringBuilder();
        while (scanner.hasNextLine()) {
            sb.append(scanner.nextLine());
        }
        scanner.close();
        return sb.toString();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:edu.usf.cutr.obascs.utils.CommandLineUtil.java

public static String getSpreadSheetId(CommandLine cmd) {

    String spreadSheetId;/*from  w w w .  j a  va2 s .  co m*/
    if (cmd.hasOption(GeneralConstants.CL_OPTION_SPREADSHEET_ID)) {
        spreadSheetId = cmd.getOptionValue(GeneralConstants.CL_OPTION_SPREADSHEET_ID);
    } else {
        Scanner scanner = new Scanner(System.in);
        Logger.getInstance().log("Enter SpreadSheet id:");
        spreadSheetId = scanner.nextLine();
        scanner.close();
    }
    return spreadSheetId;
}

From source file:com.pdemartino.test.springctxs.App.java

private static String askForContextFile() {
    String springType;/*from w w w  . j  av  a 2  s . c o m*/

    // define prompt string
    String promptString = "";
    for (Map.Entry<String, Context> ctx : contexts.entrySet()) {
        promptString += "\n" + ctx.getKey() + ": " + ctx.getValue().description;
    }

    // User Input
    Scanner scanIn = new Scanner(System.in);
    do {
        System.out.println("Choose configuration type:" + promptString);
        springType = scanIn.nextLine().trim();
    } while (!contexts.containsKey(springType));

    return contexts.get(springType).contextFile;
}

From source file:example.springdata.rest.stores.StoreInitializer.java

/**
 * Reads a file {@code starbucks.csv} from the class path and parses it into {@link Store} instances about to
 * persisted.// w ww. java2  s .  c om
 * 
 * @return
 * @throws Exception
 */
public static List<Store> readStores() throws Exception {

    ClassPathResource resource = new ClassPathResource("starbucks.csv");
    Scanner scanner = new Scanner(resource.getInputStream());
    String line = scanner.nextLine();
    scanner.close();

    FlatFileItemReader<Store> itemReader = new FlatFileItemReader<Store>();
    itemReader.setResource(resource);

    // DelimitedLineTokenizer defaults to comma as its delimiter
    DelimitedLineTokenizer tokenizer = new DelimitedLineTokenizer();
    tokenizer.setNames(line.split(","));
    tokenizer.setStrict(false);

    DefaultLineMapper<Store> lineMapper = new DefaultLineMapper<Store>();
    lineMapper.setFieldSetMapper(fields -> {

        Point location = new Point(fields.readDouble("Longitude"), fields.readDouble("Latitude"));
        Address address = new Address(fields.readString("Street Address"), fields.readString("City"),
                fields.readString("Zip"), location);

        return new Store(fields.readString("Name"), address);
    });

    lineMapper.setLineTokenizer(tokenizer);
    itemReader.setLineMapper(lineMapper);
    itemReader.setRecordSeparatorPolicy(new DefaultRecordSeparatorPolicy());
    itemReader.setLinesToSkip(1);
    itemReader.open(new ExecutionContext());

    List<Store> stores = new ArrayList<>();
    Store store = null;

    do {

        store = itemReader.read();

        if (store != null) {
            stores.add(store);
        }

    } while (store != null);

    return stores;
}

From source file:org.knoxcraft.http.client.ClientMultipartFormPost.java

public static void upload(String url, String playerName, File jsonfile, File sourcefile)
        throws ClientProtocolException, IOException {
    CloseableHttpClient httpclient = HttpClients.createDefault();
    try {//w w  w.  j ava2 s .  c  o  m
        HttpPost httppost = new HttpPost(url);

        FileBody json = new FileBody(jsonfile);
        FileBody source = new FileBody(sourcefile);
        String jsontext = readFromFile(jsonfile);

        HttpEntity reqEntity = MultipartEntityBuilder.create()
                .addPart("playerName", new StringBody(playerName, ContentType.TEXT_PLAIN))
                .addPart("jsonfile", json).addPart("sourcefile", source)
                .addPart("language", new StringBody("java", ContentType.TEXT_PLAIN))
                .addPart("jsontext", new StringBody(jsontext, ContentType.TEXT_PLAIN)).addPart("sourcetext",
                        new StringBody("public class Foo {\n  int x=5\n}", ContentType.TEXT_PLAIN))
                .build();

        httppost.setEntity(reqEntity);

        System.out.println("executing request " + httppost.getRequestLine());
        CloseableHttpResponse response = httpclient.execute(httppost);
        try {
            //System.out.println("----------------------------------------");
            System.out.println(response.getStatusLine());
            HttpEntity resEntity = response.getEntity();
            if (resEntity != null) {
                //System.out.println("Response content length: " + resEntity.getContentLength());
                Scanner sc = new Scanner(resEntity.getContent());
                while (sc.hasNext()) {
                    System.out.println(sc.nextLine());
                }
                sc.close();
                EntityUtils.consume(resEntity);
            }
        } finally {
            response.close();
        }
    } finally {
        httpclient.close();
    }
}

From source file:formatMessage.VerifyInputScanner.java

/**
 * De verifyString methode is echt heel moeilijk want eignelijk is alles een string misschien moeten we hier anders op testen 
 * door bijvoorbeeld te stellen dat er geen cijfers inmogen? 
 * @return /*  w w w. j a  va 2  s  . c  om*/
 */
public static String verifyString() {

    while (true) {
        Scanner input = new Scanner(System.in);
        try {
            String verified = input.nextLine();

            return verified;
        } catch (InputMismatchException e) {
            System.out.println("Ongeldige invoer. Probeer opnieuw.");

        }
    }
}

From source file:edu.cmu.cs.lti.ark.fn.utils.LemmatizeStuff.java

private static void run() throws FileNotFoundException {
    Scanner sc = new Scanner(new FileInputStream(infilename));
    PrintStream ps = new PrintStream(new FileOutputStream(outfilename));
    while (sc.hasNextLine()) {
        String line = sc.nextLine();
        ps.print(line + "\t");
        String[] toks = line.trim().split("\\s");
        int sentLen = Integer.parseInt(toks[0]);
        for (int i = 0; i < sentLen; i++) {
            String lemma = lemmatizer.getLemma(toks[i + 1].toLowerCase(), toks[i + 1 + sentLen]);
            ps.print(lemma + "\t");
        }//  w  w  w .j  a va 2s .  c o  m
        ps.println();
    }
    sc.close();
    closeQuietly(ps);
}