Example usage for java.lang Character isLetterOrDigit

Introduction

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

Prototype

public static boolean isLetterOrDigit(int codePoint) 

Source Link

Document

Determines if the specified character (Unicode code point) is a letter or digit.

Usage

From source file:Main.java

/**
  Convert a byte array to a human-readable String for debugging purposes.
*//* ww w .java2s.  c om*/
public static String hexDump(byte[] data) {
    byte byte_value;

    StringBuffer str = new StringBuffer(data.length * 3);

    str.append("Hex dump:\n");

    for (int i = 0; i < data.length; i += 16) {
        // dump the header: 00000000: 
        String offset = Integer.toHexString(i);

        // "0" left pad offset field so it is always 8 char's long.
        for (int offlen = offset.length(); offlen < 8; offlen++)
            str.append("0");
        str.append(offset);
        str.append(":");

        // dump hex version of 16 bytes per line.
        for (int j = 0; (j < 16) && ((i + j) < data.length); j++) {
            byte_value = data[i + j];

            // add spaces between every 2 bytes.
            if ((j % 2) == 0)
                str.append(" ");

            // dump a single byte.
            byte high_nibble = (byte) ((byte_value & 0xf0) >>> 4);
            byte low_nibble = (byte) (byte_value & 0x0f);

            str.append(hex_table[high_nibble]);
            str.append(hex_table[low_nibble]);
        }

        // dump ascii version of 16 bytes
        str.append("  ");

        for (int j = 0; (j < 16) && ((i + j) < data.length); j++) {
            char char_value = (char) data[i + j];

            // RESOLVE (really want isAscii() or isPrintable())
            if (Character.isLetterOrDigit(char_value))
                str.append(String.valueOf(char_value));
            else
                str.append(".");
        }

        // new line
        str.append("\n");
    }
    return (str.toString());

}

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From source file:net.prasenjit.auth.validation.StrongPasswordValidator.java

/** {@inheritDoc} */
@Override/*from  w ww . j av  a 2 s  .  c o  m*/
public boolean isValid(String value, ConstraintValidatorContext context) {
    if (!StringUtils.hasText(value))
        return true;
    int upperCount = 0;
    int specialCount = 0;
    int lowerCount = 0;
    int numericCount = 0;
    for (int i = 0; i < value.length(); i++) {
        char current = value.charAt(i);
        if (Character.isDigit(current))
            numericCount = 1;
        if (Character.isUpperCase(current))
            upperCount = 1;
        if (Character.isLowerCase(current))
            lowerCount = 1;
        if (!Character.isLetterOrDigit(current))
            specialCount = 1;
    }
    return upperCount + lowerCount + numericCount + specialCount >= 2;
}

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From source file:ws.moor.bt.util.ByteArray.java

public String toStringWithRaw() {
    StringBuilder result = new StringBuilder(4 * bytes.length);
    for (byte b : bytes) {
        if (Character.isLetterOrDigit(b)) {
            result.append((char) b);
        } else {/*from  w ww.j a  v  a  2  s . c o m*/
            result.append(".");
        }
    }
    result.append(" (").append(Hex.encodeHex(bytes)).append(")");
    return result.toString();
}

---

From source file:org.ardverk.gibson.EventUtils.java

private static void keywords(String value, Set<String> dst) {
    int length = value.length();
    StringBuilder sb = new StringBuilder(length);

    for (int i = 0; i < length; i++) {
        char ch = value.charAt(i);
        if (!Character.isLetterOrDigit(ch)) {
            if (sb.length() >= MIN_KEYWORD_LENGTH) {
                dst.add(sb.toString());/*  ww w.java  2  s . c  o  m*/
            }

            sb.setLength(0);
            continue;
        }

        sb.append(Character.toLowerCase(ch));
    }

    if (sb.length() >= MIN_KEYWORD_LENGTH) {
        dst.add(sb.toString());
    }
}

---

From source file:org.openhie.openempi.util.ValidationUtil.java

public static Boolean isNormal(String str, boolean allowUnderscore, boolean allowLeadingDigit,
        boolean allowLowercase, boolean allowDash) {
    for (int ii = 0; ii < str.length(); ii++) {
        char ch = str.charAt(ii);
        if (ch == '_') { // allow underscore in certain cases
            if (ii == 0 || !allowUnderscore) { // but not as the first character
                return false;
            } else {
                continue;
            }/*from   ww  w.  j av a2s  .c o  m*/
        }
        if (ch == '-') { // allow dash in certain cases
            if (ii == 0 || !allowDash) { // but not as the first character
                return false;
            } else {
                continue;
            }
        }
        if (!Character.isLetterOrDigit(ch))
            return false;
        if (!allowLowercase) {
            if (Character.isLowerCase(ch))
                return false;
        }
        if (!allowLeadingDigit && ii == 0 && Character.isDigit(ch)) // Do not allow digit as a leading character
            return false;
        if (Character.isWhitespace(ch))
            return false;
    }
    return true;
}

---

From source file:org.jboss.tools.openshift.common.core.utils.StringUtils.java

public static boolean isAlphaNumeric(String value) {
    for (int i = 0; i < value.length(); ++i) {
        final char c = value.charAt(i);
        if (!Character.isLetterOrDigit(c)) {
            return false;
        }//  www  .j  a v  a 2 s .c o  m
    }
    return true;
}

---

From source file:com.techcavern.wavetact.ircCommands.fun.Say.java

@Override
public void onCommand(String command, User user, PircBotX network, String prefix, Channel channel,
        boolean isPrivate, int userPermLevel, String... args) throws Exception {
    String channelname = null;/*from  w  w w  . j ava 2s  .  c  om*/
    if (!isPrivate) {
        channelname = prefix + channel.getName();
    } else {
        channelname = user.getNick();
    }
    if (args.length > 1 && args[0].startsWith("#")) {
        channelname = args[0];
        args = ArrayUtils.remove(args, 0);
    }
    if (command.equalsIgnoreCase("act") || command.equalsIgnoreCase("do") || command.equalsIgnoreCase("a")) {
        Registry.messageQueue.get(network)
                .add("PRIVMSG " + channelname + " :\u0001ACTION " + StringUtils.join(args, " ") + "\u0001");
    } else if (command.equalsIgnoreCase("prism")) {
        Registry.messageQueue.get(network)
                .add("PRIVMSG " + channelname + " :" + GeneralUtils.prism(StringUtils.join(args, " ")));
    } else {
        if (args.length > 1 && !Character.isLetterOrDigit(args[0].charAt(0))
                && args[0].charAt(1) == "#".charAt(0)) {
            channelname = args[0];
            args = ArrayUtils.remove(args, 0);
        }
        Registry.messageQueue.get(network).add("PRIVMSG " + channelname + " :" + StringUtils.join(args, " "));
    }
}

---

From source file:org.vietspider.server.handler.cms.metas.FilterContentHandler.java

public String handle(final HttpRequest request, final HttpResponse response, final HttpContext context,
        String... params) throws Exception {
    String pattern = params[1];/* ww w.  j av a  2  s  .com*/
    int idx = pattern.indexOf('=');
    if (idx < 0 || idx >= pattern.length() - 1) {
        throw new IndexOutOfBoundsException("Incorrect parammeter");
    }

    String filter = URLDecoder.decode(pattern.substring(idx + 1), "UTF-8");

    MetaList metas = new MetaList();
    metas.setAction("FILTER");
    metas.setCurrentPage(Integer.parseInt(params[0]));

    File file = UtilFile.getFile("system/plugin/filter", NameConverter.encode(filter));
    if (file.exists() && file.length() > 0) {
        String text = new String(RWData.getInstance().load(file), Application.CHARSET);

        int start = 0;
        while (start < text.length()) {
            char c = text.charAt(start);
            if (Character.isLetterOrDigit(c))
                break;
            start++;
        }

        int end = text.length() - 1;
        while (end > 0) {
            char c = text.charAt(end);
            if (Character.isLetterOrDigit(c))
                break;
            end--;
        }

        StringBuilder builder = new StringBuilder("\"");
        for (int i = start; i <= end; i++) {
            char c = text.charAt(i);
            if (c == ',') {
                builder.append("\" AND \"");
            } else if (c == '\n') {
                builder.append("\" OR \"");
            } else if (Character.isLetterOrDigit(c)) {
                builder.append(c);
            } else if (Character.isSpaceChar(c) || Character.isWhitespace(c)) {
                builder.append(' ');
            }
        }
        builder.append("\"");

        //      System.out.println(" thay co filter "+ builder);

        ArticleSearchQuery query = new ArticleSearchQuery();
        query.setPattern(builder.toString());

        if (Application.LICENSE != Install.PERSONAL) {
            query.setHighlightStart("no");
            ArticleIndexStorage.getInstance().search(metas, query);
        }
    }

    metas.setTitle(filter);
    metas.setUrl("?text=" + pattern.substring(idx + 1));

    return write(request, response, context, metas, params);
}

---

From source file:ml.shifu.shifu.util.ExprAnalyzer.java

private void removeNonValueChar(char[] processed) {
    for (int i = 0; i < processed.length; i++) {
        if (!Character.isLetterOrDigit(processed[i]) && processed[i] != '.' && processed[i] != '_') {
            processed[i] = ' ';
        }/*ww  w  . j  a  v a 2s .c  om*/
    }
}

---

From source file:com.yahoo.semsearch.fastlinking.utils.Normalize.java

License:asdf

/**
 * Removes non digit or letter characters from an input string
 * This method accumulates chracters in a string buffer for efficiency
 *
 * @param args string to normalize/* w  w  w.j av a2 s. co m*/
 * @return processed string
 */
public static String normalizeFast(String args) {
    final StringBuilder t = new StringBuilder();
    final int length = args.length();
    boolean inSpace = false;
    for (int i = 0; i < length; i++) {
        char charAt = args.charAt(i);
        if (Character.isLetterOrDigit(charAt)) {
            if (inSpace)
                t.append(' ');
            t.append(Character.toLowerCase(charAt));
            inSpace = false;
        } else if (t.length() > 0)
            inSpace = true;
    }
    return t.toString();
}

---

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