Example usage for java.lang Character isWhitespace

Introduction

In this page you can find the example usage for java.lang Character isWhitespace.

Prototype

public static boolean isWhitespace(int codePoint)

Source Link

Document

Determines if the specified character (Unicode code point) is white space according to Java.

Usage

From source file:Main.java

/**
 * Trim off trailing blanks but not leading blanks
 *
 * @param str/*from   w  w w  . ja va2 s .c o m*/
 *
 * @return The input with trailing blanks stipped off
 */
public static String trimTrailing(String str) {
    if (str == null)
        return null;
    int len = str.length();
    for (; len > 0; len--) {
        if (!Character.isWhitespace(str.charAt(len - 1)))
            break;
    }
    return str.substring(0, len);
}

From source file:Main.java

/**
 * Determine whether a parameter name ends at the current position,
 * that is, whether the given character qualifies as a separator.
 *//*w ww .j  a  va 2s .  co m*/
private static boolean isParameterSeparator(char c) {
    if (Character.isWhitespace(c)) {
        return true;
    }
    for (char separator : PARAMETER_SEPARATORS) {
        if (c == separator) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

public static char skipWhitespace(Reader reader) throws IOException {
    if (DEBUG)/*from w  ww .j av  a 2 s  . c  om*/
        System.out.println("XMLParserUtilities.skipWhitespace( " + reader + ")");
    char c = (char) reader.read();

    while (Character.isWhitespace(c)) {
        c = (char) reader.read();
    }

    return c;
}

From source file:Main.java

/**
 * Check whether the given CharSequence contains any whitespace characters.
 * @param str the CharSequence to check (may be {@code null})
 * @return {@code true} if the CharSequence is not empty and
 * contains at least 1 whitespace character
 * @see Character#isWhitespace// w  w  w  .  j  a va 2s.c  o  m
 */
public static boolean containsWhitespace(CharSequence str) {
    if (!hasLength(str)) {
        return false;
    }
    int strLen = str.length();
    for (int i = 0; i < strLen; i++) {
        if (Character.isWhitespace(str.charAt(i))) {
            return true;
        }
    }
    return false;
}

From source file:StringUtil.java

/**
 * Helper function for null, empty, and whitespace string testing.
 *
 * @return true if s == null or s.equals("") or s contains only whitespace
 *         characters./*from w w w .  j  a va  2  s  .  c o  m*/
 */
public static boolean isEmptyOrWhitespace(String s) {
    s = makeSafe(s);
    for (int i = 0, n = s.length(); i < n; i++) {
        if (!Character.isWhitespace(s.charAt(i))) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

public static String getLeadingWhitespace(String str) {
    if (str == null) {
        return ""; //$NON-NLS-1$
    }// ww  w  . j  av  a 2s .c o m

    int sz = str.length();
    StringBuffer buffer = new StringBuffer();
    for (int i = 0; i < sz; i++) {
        if ((Character.isWhitespace(str.charAt(i)))) {
            buffer.append(str.charAt(i));
        } else {
            break;
        }
    }
    return buffer.toString();
}

From source file:Main.java

public static boolean isNumber(String s) {
    boolean pointcanappear = true;
    boolean signcanappear = true;
    boolean res = true;
    int i = 0;//from  ww  w  .  j a va2 s . c o  m

    if (s.length() == 0)
        res = false;
    while (i < s.length() && res) {
        char c = s.charAt(i);
        boolean ok = false;
        if (Character.isWhitespace(c))
            ok = true;
        else if (Character.isDigit(c)) {
            if (signcanappear)
                signcanappear = false;
            ok = true;
        } else if (c == '-' && signcanappear) {
            signcanappear = false;
            ok = true;
        } else if ((c == '.' || c == ',') && pointcanappear) {
            pointcanappear = false;
            ok = true;
        }
        if (ok)
            i++;
        else
            res = false;
    }
    return res;
}

From source file:Main.java

private static String startXMLFor(String elementName, String argStr) {
    int tokenIndex = argStr.toLowerCase().indexOf(elementName.toLowerCase());
    if (tokenIndex < 1)
        return null;

    int startIndex = tokenIndex;
    while (startIndex >= 0 && argStr.charAt(startIndex) != '<'
            && (Character.isWhitespace(argStr.charAt(startIndex)) || startIndex == tokenIndex)) {
        --startIndex;//from w w  w.  j  av a  2s .  com
    } // while

    if (startIndex < 0 || argStr.charAt(startIndex) != '<')
        return null;
    if (startIndex == 0)
        return argStr;
    return argStr.substring(startIndex);
}

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

/**
 * Check if the String is null or has only whitespaces.
 *
 * Modified from {@link org.apache.commons.lang.StringUtils#isBlank(String)}.
 *
 * @param string String to check//from   w  ww  .  j  a  v  a  2s.  co m
 * @return {@code true} if the String is null or has only whitespaces
 */
public static boolean isBlank(@Nullable String string) {
    if (isEmpty(string)) {
        return true;
    }
    for (int i = 0; i < string.length(); i++) {
        if (!Character.isWhitespace(string.charAt(i))) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

/**
 * <p>/*from w w w . ja  va 2s  .  c om*/
 * Deletes all whitespaces from a String.
 * </p>
 * <p/>
 * <p>
 * Whitespace is defined by {@link Character#isWhitespace(char)}.
 * </p>
 *
 * @param str String target to delete whitespace from
 * @return the String without whitespaces
 * @throws NullPointerException
 */
public static String deleteWhitespace(String str) {
    StringBuilder buffer = new StringBuilder();
    int sz = str.length();
    for (int i = 0; i < sz; i++) {
        if (!Character.isWhitespace(str.charAt(i))) {
            buffer.append(str.charAt(i));
        }
    }
    return buffer.toString();
}