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 void launchUrl(String url, Context context) {
    if (!url.isEmpty() && context != null) {
        context.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
    }/*  w w w . ja va 2 s .  c  o  m*/
}

From source file:Main.java

/**
 * Strips a string of all white space and replaces with an empty string.
 *
 * @param original string that can have any number of spaces.
 * @return a clean string stripped of white space.
 *//*from   w  w w. j  a  v  a2  s.  c o  m*/
public static String getCleanString(String original) {
    if (original == null || original.isEmpty()) {
        return EMPTY_STRING;
    }

    return original.replaceAll(REGEX_WHITESPACE, EMPTY_STRING);
}

From source file:Main.java

public static String setStringNotNull(String stringRes) {
    if (stringRes == null || stringRes.isEmpty()) {
        return "";
    }//from   w w w  .  ja v  a 2  s . c  om

    //Convert Non_breaking (ASCI 160) to Simple Space. trim() does'nt handle it.
    stringRes = stringRes.replace(String.valueOf((char) 160), " ");

    String tempString = stringRes.trim();
    return tempString;
}

From source file:Main.java

/**
 *
 * @param number//from   www. j  a  v a  2 s  .  co m
 * @return
 */
public static Double convertStringToDoubleObject(String number) {

    if (number == null || number.isEmpty()) {
        return null;
    }
    try {
        return Double.parseDouble(number);
    } catch (NumberFormatException e) {
        return null;
    }
}

From source file:Main.java

public static boolean validateIPAddress(String ip) {
    if (ip == null || ip.isEmpty())
        return false;
    ip = ip.trim();/*w  w  w.jav  a 2s.co m*/
    if ((ip.length() < 6) & (ip.length() > 15))
        return false;

    try {
        Pattern pattern = Pattern.compile(
                "^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$");
        Matcher matcher = pattern.matcher(ip);
        return matcher.matches();
    } catch (PatternSyntaxException ex) {
        return false;
    }
}

From source file:Main.java

public static XMLGregorianCalendar stringAsCalendar(String date) {
    if (date == null || date.isEmpty()) {
        return null;
    }/*  ww  w  .j  ava  2s . c  om*/
    return df.newXMLGregorianCalendar(date);
}

From source file:Main.java

/**
 * Capitalizes the 1st character of the given string
 * /*from   w w  w  .  j  a  v  a 2 s. c o  m*/
 * @param str the String to capitalize
 * @return the capitalized String
 */
public static String capitalize(String str) {
    if (str == null || str.isEmpty())
        return null;
    return Character.toUpperCase(str.charAt(0)) + str.substring(1);
}

From source file:Main.java

static public String replaceNotExpectedPattern(String text, Pattern pattern, String repl) {
    if (repl == null || repl.isEmpty()) {
        repl = "";
    }//w  w  w .  java  2 s  . c  om
    while (!text.isEmpty()) {
        if (pattern.matcher(text).matches()) {
            return text;
        }
        // replace last position
        text = text.substring(0, text.length() - 1) + repl;
    }
    return text;
}

From source file:Main.java

private static String constructLogFileName(String base, String addend) {
    if (addend == null || addend.isEmpty()) {
        return base;
    } else {/*from www.ja  v a 2s  .  com*/
        return base + "_" + addend;
    }
}

From source file:Main.java

/**
 * Returns true if the given MIME type has an entry in the map.
 * //www.j  a v a  2 s  . c o  m
 * @param mimeType
 *            A MIME type (i.e. text/plain)
 * @return True if there is a mimeType entry in the map.
 */
public static boolean hasMimeType(String mimeType) {
    if (mimeType == null || mimeType.isEmpty()) {
        return false;
    }
    return mimeTypeToExtensionMap.containsKey(mimeType);
}