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:de.thischwa.pmcms.tool.Utils.java

/**
  * This method ensures that the output String has only
  * valid XML unicode characters as specified by the
  * XML 1.0 standard. For reference, please see
  * <a href="http://www.w3.org/TR/2000/REC-xml-20001006#NT-Char">the
  * standard</a>. /*from  ww w. j a v  a2 s.  c  o  m*/
  *
  * @param in The String whose non-valid characters we want to remove.
  * @return The in String, stripped of non-valid characters.
  */
public static String stripNonValidXMLCharacters(String in) {
    if (in == null)
        return null;
    if (in.isEmpty())
        return "";

    StringBuffer out = new StringBuffer();
    char current;
    for (int i = 0; i < in.length(); i++) {
        current = in.charAt(i);
        if ((current == 0x9) || (current == 0xA) || (current == 0xD)
                || ((current >= 0x20) && (current <= 0xD7FF)) || ((current >= 0xE000) && (current <= 0xFFFD))
                || ((current >= 0x10000) && (current <= 0x10FFFF)))
            out.append(current);
    }
    return out.toString();
}

From source file:Main.java

/** Locate a sub-element tagged 'name', return its value.
 *
 *  @param element Element where to start looking. May be null.
 *  @param name Name of sub-element to locate.
 *  @param default_value Default value if not found
 *
 *  @return Returns double string that was found
 *  @throws Exception on error in number format
 *///from w ww .  ja  v a 2 s  .  c  om
final public static double getSubelementDouble(final Element element, final String name,
        final double default_value) throws Exception {
    final String text = getSubelementString(element, name, "").trim();
    if (text.isEmpty())
        return default_value;
    try {
        return Double.parseDouble(text);
    } catch (NumberFormatException ex) {
        throw new Exception("Invalid number for <" + name + ">", ex);
    }
}

From source file:com.amazonaws.services.kinesis.clientlibrary.config.AWSCredentialsProviderPropertyValueDecoder.java

private static List<String> getProviderNames(String property) {
    // assume list delimiter is ","
    String[] elements = property.split(LIST_DELIMITER);
    List<String> result = new ArrayList<String>();
    for (int i = 0; i < elements.length; i++) {
        String string = elements[i].trim();
        if (!string.isEmpty()) {
            // find all possible names and add them to name list
            result.addAll(getPossibleFullClassNames(string));
        }/*ww  w  .  j  ava2s . co  m*/
    }
    return result;
}

From source file:Main.java

public synchronized static Document loadDocument(String data)
        throws SAXException, IOException, ParserConfigurationException {
    if (data != null && !data.isEmpty()) {
        return loadDocument(new ByteArrayInputStream(data.getBytes("UTF-8")));
    }//from www. j ava 2s  . co  m
    return null;
}

From source file:Main.java

public static String getFIO(String f, String i, String o) {

    String res = "";

    for (String t : new String[] { f, i, o }) {
        if (t != null && !(t = t.trim()).isEmpty()) {
            res += (res.isEmpty() ? "" : " ") + t;
        }/*from ww  w  . java  2s .  c om*/
    }

    return res;
}

From source file:com.castis.xylophone.adsmadapter.common.util.CiDateUtil.java

public static boolean checkFutureDate(String date, String format) {
    if (date == null || date.isEmpty() == true)
        return false;

    Date tmpDate = convertDate(date, format);
    Date curDate = DateUtil.getCurDate();

    return tmpDate.after(curDate);
}

From source file:com.vmware.identity.openidconnect.protocol.JSONUtils.java

public static String getString(JSONObject json, String key) throws ParseException {
    Validate.notNull(json, "json");
    Validate.notEmpty(key, "key");

    Object objectValue = json.get(key);
    if (objectValue == null) {
        throw new ParseException(String.format("json is missing %s member", key));
    }/*from  w w  w .j  a  v a  2 s.c om*/

    if (!(objectValue instanceof String)) {
        throw new ParseException(String.format("json has non-string %s member", key));
    }

    String stringValue = (String) objectValue;
    if (stringValue.isEmpty()) {
        throw new ParseException(String.format("json has empty %s member", key));
    }

    return stringValue;
}

From source file:Main.java

public static String doubleArr2String(Double[] doubleArray, String delimeter) {
    String str = "";
    for (int i = 0; i < doubleArray.length; i++) {
        str += delimeter + Double.toString(doubleArray[i]);
    }//from   w ww .  j av a 2 s  .  co m
    if (!str.isEmpty())
        str = str.substring(1);
    return str;
}

From source file:Main.java

public static String concatString(List<String> listOfStrings, String delimeter) {
    String concat = "";
    for (int i = 0; i < listOfStrings.size(); i++) {
        concat += delimeter + listOfStrings.get(i);
    }/*from   w w  w .ja  v a 2s  . c  o m*/
    if (!concat.isEmpty())
        concat = concat.substring(1);
    return concat;
}

From source file:Main.java

/**
 *  Find all of the  descendant elements of the given parent Node
 *  whose tag name equals the given tag.
 *
 *  @param parent The root of the xml dom tree to search.
 *  @param tag The tag name to match./*from   ww  w. j ava  2 s. c om*/
 *  @param found The list of descendants that match the given tag.
 */
private static void findDescendantNamesWithSeparator(Node parent, String tag, String descendants,
        String separator, List<String> found) {
    if (parent instanceof Element) {
        String elementName = ((Element) parent).getAttribute("name");
        if (!elementName.isEmpty()) {
            descendants += ((Element) parent).getAttribute("name");
        }
        if (parent.getNodeName().equals(tag)) {
            found.add(descendants);
        }
        if (!elementName.isEmpty()) {
            descendants += separator;
        }
    }
    NodeList children = parent.getChildNodes();
    for (int i = 0; i < children.getLength(); i++) {
        Node child = children.item(i);
        findDescendantNamesWithSeparator(child, tag, descendants, separator, found);
    }
}