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[] components(String path, String separator) {
    if (path == null || path.isEmpty())
        return null;
    String[] tmp = path.split(separator + "+"); // multiple separators could be present
    if (tmp == null)
        return null;
    if (tmp.length == 0)
        return null;

    if (tmp[0].isEmpty())
        tmp[0] = separator;/*from w ww . j a  v  a2  s  . c om*/
    return tmp;
}

From source file:Main.java

public static Double getDoubleAttr(Element element, String name) {
    String attr = element.getAttribute(name);
    if (!attr.isEmpty()) {
        Double ret = Double.valueOf(attr);
        return ret;
    }//  ww w .j  a  v  a2s  .c  o m
    return null;
}

From source file:Main.java

public static String parseString(Element element, String key) {
    String value = element.getAttribute(key);
    if (value != null && !value.isEmpty()) {
        return value;
    }/* ww w .jav  a  2s. c o m*/
    return null;
}

From source file:Main.java

/**
 * @param values string values to test/*from w  ww. j ava 2  s .  c  o  m*/
 * @return true if each string isn't equal to null and isn't empty
 */
public static boolean isValid(String... values) {
    if (values == null || values.length == 0) {
        return false;
    }

    for (String value : values) {
        if (value == null || value.isEmpty()) {
            return false;
        }
    }

    return true;
}

From source file:Main.java

/**
 * Remove invalid XML characters from a string.
 * @param text the text to cleanse.// w w  w. ja  v a2 s.  c o  m
 * @return cleansed text or the original string if it is null or empty
 */
public static String removeInvalidXMLChars(String text) {
    if (text == null || text.isEmpty()) {
        return text;
    }
    return text.replaceAll(INVALID_XML_CHARACTERS, "");
}

From source file:Main.java

static public float getFloatAttribute(Element element, String name) {
    String s = getTrimmedAttribute(element, name);
    return s.isEmpty() ? 0f : Float.parseFloat(s);
}

From source file:Main.java

public static boolean delete(String path) {
    if (path == null || path.isEmpty())
        return false;
    File f = new File(path);
    if (f.exists()) {
        if (f.isDirectory()) {
            return deleteDirectory(f);
        } else {/*from   www.ja v  a  2  s. c o  m*/
            return f.delete();
        }
    }
    return false;
}

From source file:Main.java

static public double getDoubleAttribute(Element element, String name) {
    String s = getTrimmedAttribute(element, name);
    return s.isEmpty() ? 0d : Double.parseDouble(s);
}

From source file:Main.java

public static String getStringAttr(Element element, String name, String def) {
    String attr = element.getAttribute(name);
    if (attr.isEmpty()) {
        attr = def;/*from  w w  w. j  a  va  2 s .c  om*/
    }
    return attr;
}

From source file:Main.java

static public int getIntegerAttribute(Element element, String name) {
    String s = getTrimmedAttribute(element, name);
    return s.isEmpty() ? 0 : Integer.parseInt(s);
}