Example usage for java.lang String isEmpty

Introduction

In this page you can find the example usage for java.lang String isEmpty.

Prototype

public boolean isEmpty()

Source Link

Document

Returns true if, and only if, #length() is 0 .

Usage

From source file:Main.java

public static String GetChildElementText(Element element, String name, String defaultValue) {
    if (element != null && name != null && !name.isEmpty()) {
        NodeList nodes = element.getChildNodes();

        for (int i = 0; i < nodes.getLength(); i++) {
            Node node = nodes.item(i);

            if (node instanceof Element && name.equals(node.getNodeName())) {
                return node.getTextContent();
            }/* www. ja v  a  2 s  .com*/
        }
    }
    return defaultValue;
}

From source file:com.lecaddyfute.utils.security.AESCrypto.java

public static Key generateKey() throws Exception {

    String cle = CLE;
    try {/*w  w w  .  j  a  va 2  s .  co  m*/
        if (cle.isEmpty()) {
            InetAddress adrLocale;
            adrLocale = InetAddress.getLocalHost();
            cle = adrLocale.getHostName();
        }
        if (cle.length() > 16) {
            cle = cle.substring(0, 16);
        }
        if (cle.length() < 16) {
            int chartocomplete = 16 - cle.length();
            for (int i = 0; i < chartocomplete; i++) {
                cle = cle + i;
            }
        }
        logger.log(Level.INFO, "cle par defaut {0}", cle);
        keyValue = cle.getBytes();
    } catch (Exception e) {
        e.printStackTrace();

    }
    Key key = new SecretKeySpec(keyValue, ALGO);
    return key;
}

From source file:Main.java

public static String getMiddleString(String source, String start, String end) {
    int start_idx = source.indexOf(start) + start.length();
    int end_idx = 0;
    if (end.isEmpty()) {
        end_idx = source.length();/*from ww w  .  j a v  a2 s .  c o  m*/
    } else {
        end_idx = source.indexOf(end, start_idx);
        if (end_idx <= 0) {
            end_idx = source.length();
        }
    }

    if (start_idx <= 0 || end_idx <= 0 || end_idx <= start_idx) {

        return null;
    }

    return source.substring(start_idx, end_idx);
}

From source file:Main.java

private static String getFileExtensionFromUrl(String url) {
    if (!TextUtils.isEmpty(url)) {
        int fragment = url.lastIndexOf('#');
        if (fragment > 0) {
            url = url.substring(0, fragment);
        }//from   ww w .j a  v  a 2 s.co  m

        int query = url.lastIndexOf('?');
        if (query > 0) {
            url = url.substring(0, query);
        }

        int filenamePos = url.lastIndexOf('/');
        String filename = 0 <= filenamePos ? url.substring(filenamePos + 1) : url;

        if (!filename.isEmpty()) {
            int dotPos = filename.lastIndexOf('.');
            if (0 <= dotPos) {
                return filename.substring(dotPos + 1);
            }
        }
    }

    return "";
}

From source file:Main.java

/**
 * string convert to set//from   ww w  .j a  va2s.  c  om
 */
public static Set<String> stringConvertToSet(String values, String separate) {
    if (values == null) {
        return null;
    }
    if (values.isEmpty()) {
        return Collections.EMPTY_SET;
    }
    String sp = TextUtils.isEmpty(separate) ? COMMA : separate;
    String[] sV = values.split(sp);
    Set<String> set = new HashSet<>();
    for (String v : sV) {
        set.add(v);
    }
    return set;
}

From source file:Main.java

public static List<String> createListFromDelimitedText(String delimitedText, String delimiter) {
    if (delimitedText == null) {
        return null;
    }// w  w  w .j av a2  s.  com

    if (delimitedText.isEmpty() || delimiter == null || delimiter.isEmpty()
            || !delimitedText.contains(delimiter)) {
        return Arrays.asList(delimitedText);
    } else {
        return Arrays.asList(delimitedText.split(delimiter));
    }
}

From source file:fr.gael.dhus.olingo.v1.map.impl.ConnectionMap.java

/**
 * Returns a sub Map of the given map containing only AccessInformation about
 * the given user./*from   ww w  .jav a 2s.c o m*/
 * @param map Access info map.
 * @param username to filter.
 * @return a new, filtered map.
 */
private static Map<UUID, AccessInformation> filterUser(Map<UUID, AccessInformation> map, String username) {
    if (username == null || username.isEmpty()) {
        return map;
    }

    Map<UUID, AccessInformation> res = new HashMap<>();
    for (Entry<UUID, AccessInformation> ent : map.entrySet()) {
        String accessuser = ent.getValue().getUsername();
        if (accessuser != null && accessuser.equals(username)) {
            res.put(ent.getKey(), ent.getValue());
        }
    }
    return res;
}

From source file:io.micrometer.core.instrument.util.StringUtils.java

/**
 * Check if the String is null or empty.
 *
 * @param string String to check//from ww  w .  j av  a2 s .c o  m
 * @return {@code true} if the String is null or empty
 */
public static boolean isEmpty(@Nullable String string) {
    return string == null || string.isEmpty();
}

From source file:Validation.java

public static Integer parseInt(String s) {
    if (s == null || s.isEmpty()) {
        return null;
    } else {//from  ww  w.  jav  a 2s .com
        return Integer.parseInt(s);
    }
}

From source file:Main.java

public static Date parse(String dateFormatted, SimpleDateFormat dateFormat, boolean useUtc) {
    Date date = null;//from w  w w.j  a v  a  2  s  . c  o m
    if (!dateFormatted.isEmpty()) {
        try {
            if (useUtc) {
                dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
            }
            date = dateFormat.parse(dateFormatted);
        } catch (Exception e) {
            throw new RuntimeException(
                    "Error parsing the dateFormatted: " + dateFormatted + " pattern: " + dateFormat.toPattern(),
                    e);
        }
    }
    return date;
}