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:com.saltedge.sdk.utils.SEJSONTools.java

private static boolean validation(JSONObject jsonObject, String key) {
    return jsonObject == null || key == null || key.isEmpty() || jsonObject.isNull(key);
}

From source file:edu.lternet.pasta.common.HTMLUtility.java

/**
 * This method helps to ensure that the output String has only valid HTML
 * characters by stripping out invalid control characters.
 *
 * @param in The String whose non-valid characters we want to remove.
 * @return The input String, stripped of non-valid characters.
 *//* w  w w. j  a  v  a  2  s  . c  om*/
public static String stripNonValidHTMLCharacters(String in) {

    char[] charBuf = null;

    if (in != null && !in.isEmpty()) {

        charBuf = in.toCharArray();
        int charBufSize = charBuf.length;

        for (int i = 0; i < charBufSize; i++) {

            if (isInvalidHTMLCharacter(charBuf[i])) {
                charBuf[i] = '\uFFFD'; // Replace illegal character with replacement character
            }

        }

    }

    return new String(charBuf);

}

From source file:Main.java

public static String basename(String path) {
    if (path == null)
        return "";

    path = path.replaceAll("/+$", "");
    int i = path.lastIndexOf('/');

    return (path.isEmpty()) ? "/" : (i == -1) ? path : path.substring(i + 1);
}

From source file:com.modcrafting.ultrabans.util.Formatting.java

public static boolean validIP(String ip) {
    if (ip == null || ip.isEmpty())
        return false;
    ip = ip.trim();/*  w  w  w .j av  a2s. 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:com.hoiio.sdk.util.StringUtil.java

/**
 * Checks for the {@code String} is empty or not. It checks both nullability and emptiness
 * @param str {@code String} to check//from  w ww  .  j  a va 2s .  c  om
 * @return whether this string is empty or not
 */
public static boolean isEmpty(String str) {
    return (str == null || str.isEmpty());
}

From source file:adalid.util.i18n.Merger.java

private static boolean noTranslationRequired(String string) {
    return string.isEmpty() || isMessageKey(string);
}

From source file:net.landora.video.preferences.PreferenceObject.java

private static List<String> convertToStringList(String value) {
    if (value.isEmpty()) {
        return Collections.EMPTY_LIST;
    }//w ww.  ja v a2 s  . com

    List<String> result = new ArrayList<String>();
    int lastIndex = -1;
    int index;
    while ((index = value.indexOf('\t', lastIndex + 1)) != -1) {
        result.add(StringEscapeUtils.unescapeJava(value.substring(lastIndex + 1, index)));
        lastIndex = index;
    }
    return result;
}

From source file:Main.java

public static Component getChild(Component parent, String name) {
    parent = getContainer(parent);/*from   w  ww . ja  v  a 2s .  c o m*/

    if (parent instanceof JSplitPane) {
        JSplitPane split = (JSplitPane) parent;
        if (JSplitPane.TOP.equals(name)) {
            return split.getTopComponent();
        } else if (JSplitPane.LEFT.equals(name)) {
            return split.getLeftComponent();
        } else if (JSplitPane.RIGHT.equals(name)) {
            return split.getRightComponent();
        } else if (JSplitPane.BOTTOM.equals(name)) {
            return split.getBottomComponent();
        }
    }
    Container cont = (Container) parent;
    for (int i = 0; i < cont.getComponentCount(); i++) {
        Component comp = cont.getComponent(i);
        if (name.equals(comp.getName())) {
            return comp;
        }
    }
    if (name.endsWith(VIEW_SUFFIX)) {
        String subName = name.substring(0, name.length() - VIEW_SUFFIX.length());
        if (subName.isEmpty()) {
            return parent;
        }
        return getContainer(getChild(parent, subName));
    }

    throw new IllegalArgumentException("No component named " + name);
}

From source file:com.fjn.helper.common.util.StringUtil.java

public static boolean isBlank(String str) {
    return str == null || str.isEmpty() || str.trim().isEmpty();
}

From source file:com.kstenschke.shifter.models.shiftertypes.JsVariablesDeclarations.java

/**
 * @param  str      text selection to be shifted
 * @return String//w w  w . j  a v  a  2 s.c  o m
 */
public static String getShifted(String str) {
    String[] lines = str.split("\n");
    String shiftedLines = "";

    int lineNumber = 0;
    String shiftedLine;
    for (String line : lines) {
        line = line.trim();

        if (line.isEmpty() || line.startsWith("//")) {
            // do not change empty or comment-lines
            shiftedLine = line;
        } else {
            // remove "var " from beginning
            line = line.substring(4);
            // replace ";" from ending by ",\n"
            if (StringUtils.countMatches(line, "//") == 1) {
                // handle line ending with comment intact
                String[] parts = line.split("//");
                parts[0] = parts[0].trim();
                shiftedLine = parts[0].substring(0, parts[0].length() - 1) + ", //" + parts[1];
            } else {
                shiftedLine = line.substring(0, line.length() - 1) + ",";
            }
        }

        shiftedLines += (lineNumber == 0 ? "" : "\t") + shiftedLine + "\n";
        lineNumber++;
    }

    return "var " + shiftedLines.substring(0, shiftedLines.length() - 2) + ";";
}