Example usage for org.apache.commons.lang3 StringUtils isEmpty

Introduction

In this page you can find the example usage for org.apache.commons.lang3 StringUtils isEmpty.

Prototype

public static boolean isEmpty(final CharSequence cs)

Source Link

Document

Checks if a CharSequence is empty ("") or null.

 StringUtils.isEmpty(null)      = true StringUtils.isEmpty("")        = true StringUtils.isEmpty(" ")       = false StringUtils.isEmpty("bob")     = false StringUtils.isEmpty("  bob  ") = false

NOTE: This method changed in Lang version 2.0.

Usage

From source file:com.sangupta.shire.config.YmlConfigReader.java

public static String[] readLine(String line) {
    // check for empty lines
    if (StringUtils.isEmpty(line)) {
        return null;
    }/*www . j  a v  a2s. co m*/

    // clean spaces
    line = line.trim();

    // check for comments
    if (line.startsWith("#")) {
        return null;
    }

    // check for corrupt property file
    if (line.startsWith(":")) {
        throw new RuntimeException("Corrupt YML file, property cannot begin with a colon");
    }

    // read the property
    int index = line.indexOf(':');

    String propertyName = line.substring(0, index).trim();

    String propertyValue = "";
    if ((index + 1) < line.length()) {
        propertyValue = line.substring(index + 1).trim();
    }

    String[] tokens = { propertyName, propertyValue };

    return tokens;
}

From source file:minor.stockQuote.stockQuote.java

@Override
public void validate() {
    if (StringUtils.isEmpty(getStockQuote())) {
        addFieldError("StockQuote", "Stock Quote cannot be blank");
    }/*from  w w  w  .j a v a 2s  .  c  om*/
    if (StringUtils.isNumeric(getStockQuote())) {
        addFieldError("StockQuote", "Stock Quote cannot be numeric");
    }
    if (StringUtils.length(getStockQuote()) > 6) {
        addFieldError("StockQuote", "Invalid Ticker length");
    }
}

From source file:com.astamuse.asta4d.data.convertor.String2Long.java

@Override
public Long convert(String s) throws UnsupportedValueException {
    if (StringUtils.isEmpty(s)) {
        return null;
    }//from ww w. j a  v a  2  s  .  co m
    try {
        return Long.parseLong(s);
    } catch (NumberFormatException nfe) {
        throw new UnsupportedValueException();
    }
}

From source file:com.astamuse.asta4d.data.convertor.String2Bool.java

@Override
public Boolean convert(String s) throws UnsupportedValueException {
    if (StringUtils.isEmpty(s)) {
        return null;
    } else {//w  w w.  ja v  a  2  s.  c  o m
        return Boolean.parseBoolean(s);
    }
}

From source file:jongo.JongoJetty.java

private static XmlConfiguration getJettyConfiguration() {
    // First we try from the command line
    String jettyFile = System.getProperty("jetty.configuration");

    if (StringUtils.isEmpty(jettyFile)) {
        l.info("No jetty.configuration option given. Using etc/jetty.xml");
        jettyFile = "etc/jetty.xml";
    }/*  ww w.j  a va  2s  .  co m*/

    Resource jettyXml = null;
    try {
        jettyXml = Resource.newSystemResource(jettyFile);
    } catch (IOException ex) {
        l.warn("Failed to read Jetty Configuration file: {}. Trying with jetty.xml", jettyFile);
    }

    if (jettyXml == null) {
        jettyFile = "jetty.xml";
        try {
            jettyXml = Resource.newSystemResource(jettyFile);
        } catch (IOException ex1) {
            l.error("Failed to read jetty configuration.", ex1);
        }
    }

    XmlConfiguration configuration = null;
    if (jettyXml != null) {
        try {
            configuration = new XmlConfiguration(jettyXml.getInputStream());
        } catch (SAXException ex) {
            l.error("Failed to parse Jetty configuration");
            l.error(ex.getMessage(), ex);
        } catch (IOException ex) {
            l.error("Failed to read Jetty configuration");
            l.error(ex.getMessage(), ex);
        }
    }
    return configuration;
}

From source file:com.keybox.manage.db.AuthDB.java

/**
 * auth user and return auth token if valid auth
 *
 * @param auth username and password object
 * @return auth token if success/*from  w  w w.j  av  a2  s .  c  o m*/
 */
public static String login(Auth auth) {
    //check ldap first
    String authToken = ExternalAuthUtil.login(auth);

    if (StringUtils.isEmpty(authToken)) {

        Connection con = null;

        try {
            con = DBUtils.getConn();

            //get salt for user
            String salt = getSaltByUsername(con, auth.getUsername());
            //login
            PreparedStatement stmt = con
                    .prepareStatement("select * from users where enabled=true and username=? and password=?");
            stmt.setString(1, auth.getUsername());
            stmt.setString(2, EncryptionUtil.hash(auth.getPassword() + salt));
            ResultSet rs = stmt.executeQuery();

            if (rs.next()) {

                auth.setId(rs.getLong("id"));
                authToken = UUID.randomUUID().toString();
                auth.setAuthToken(authToken);
                auth.setAuthType(Auth.AUTH_BASIC);
                updateLogin(con, auth);

            }
            DBUtils.closeRs(rs);
            DBUtils.closeStmt(stmt);

        } catch (Exception e) {
            log.error(e.toString(), e);
        }

        DBUtils.closeConn(con);
    }

    return authToken;

}

From source file:com.astamuse.asta4d.data.convertor.String2Int.java

@Override
public Integer convert(String s) throws UnsupportedValueException {
    if (StringUtils.isEmpty(s)) {
        return null;
    }/*from w  w w  .  ja  v a  2s. co  m*/
    try {
        return Integer.parseInt(s);
    } catch (NumberFormatException nfe) {
        throw new UnsupportedValueException();
    }
}

From source file:de.micromata.genome.gwiki.utils.PropUtils.java

public static OrderedProperties toProperties(String text) {
    OrderedProperties props = new OrderedProperties();
    if (StringUtils.isEmpty(text) == true) {
        return props;
    }//w  ww .  ja v a 2  s .com
    try {
        props.load(IOUtils.toInputStream(text, PROPS_ENCODING));
        return props;
    } catch (IOException ex) {
        throw new RuntimeIOException("Failed to parse Property file: " + ex.getMessage(), ex);
    }
}

From source file:com.adguard.android.filtering.api.HttpServiceClient.java

/**
 * Downloads string from the specified url.
 *
 * @param downloadUrl Download url//from  w ww  . java  2  s  .  c  om
 * @return String or null
 * @throws IOException
 */
public static String downloadString(String downloadUrl) throws IOException {
    LOG.debug("Sending HTTP GET request to {}", downloadUrl);

    final String response = UrlUtils.downloadString(downloadUrl, READ_TIMEOUT, CONNECTION_TIMEOUT);
    if (StringUtils.isEmpty(response)) {
        LOG.error("Response for {} is empty", downloadUrl);
        throw new IOException("Response is empty.");
    }

    LOG.debug("Got response:{}", response);
    return response;
}

From source file:Action.UserLoginAction.java

@Override
public void validate() {
    if (StringUtils.isEmpty(user.getUsername()))
        addFieldError("user.username", "User Name can not be blank");
    if (StringUtils.isEmpty(user.getPassword()))
        addFieldError("user.password", "Password con not be blank");
}