Example usage for java.lang Character isLetter

Introduction

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

Prototype

public static boolean isLetter(int codePoint)

Source Link

Document

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

Usage

From source file:Main.java

public static String getFirstChar(String value) {
    if (value != null) {
        for (int i = 0; i < value.length(); i++) {
            char ch = value.charAt(i);
            if (Character.isLetter(ch)) {
                return String.valueOf(ch).toUpperCase();
            }//from  ww w  . ja  v a 2  s.  c  o m
        }
    }
    return String.valueOf(" ");
}

From source file:Main.java

private static String capitalizeAllWords(String str) {
    String phrase = "";
    boolean capitalize = true;
    for (char c : str.toLowerCase().toCharArray()) {
        if (Character.isLetter(c) && capitalize) {
            phrase += Character.toUpperCase(c);
            capitalize = false;//from  w ww . j  av  a2s  . c  o m
            continue;
        } else if (c == ' ') {
            capitalize = true;
        }
        phrase += c;
    }
    return phrase;
}

From source file:Main.java

public static boolean isLegalName(String n) {
    if (n.length() == 0)
        return false;
    if (!Character.isLetter(n.charAt(0)))
        return false;
    for (int i = 0; i < n.length(); i++) {
        char c = n.charAt(i);
        if (Character.isLetterOrDigit(c))
            continue;
        if (c == '_')
            continue;
        if (c == '.')
            continue;
        return false;
    }//from  ww  w .j a  v a2 s  .  c om
    if (n.length() > 1) {
        String n2 = n.substring(0, 2);
        if (n2.equalsIgnoreCase("JS"))
            return false;
    }
    if (n.indexOf("__") >= 0)
        return false;
    if (reservedWords.contains(n))
        return false;
    return true;
}

From source file:Main.java

public static String randomStr(long strLen) {

    char freshChar;
    String freshString;/*from w w w  .jav  a  2 s.  c  o m*/
    freshString = "";

    while (freshString.length() < (strLen - 1)) {

        freshChar = (char) (Math.random() * 128);
        if (Character.isLetter(freshChar)) {
            freshString += freshChar;
        }
    }

    return (freshString);

}

From source file:Main.java

private static String __getNextWord(String s, int pos) {
    int i = 0;//from www .j a v a  2 s  . com
    StringBuilder sb = new StringBuilder();
    while (pos + i < s.length()) {
        char c = s.charAt(pos + i);
        if (Character.isLetter(c)) {
            sb.append(c);
        } else {
            break;
        }
        i++;
    }
    if (sb.length() == 0)
        return null;
    return sb.toString();
}

From source file:Main.java

public static String computePhraseShape(String x) {
    StringBuilder buf = new StringBuilder();
    char lastc = 0;
    for (int i = 0; i < x.length(); i++) {
        char c = x.charAt(i);
        if (Character.isDigit(c))
            c = '0';
        else if (Character.isLetter(c))
            c = Character.isLowerCase(c) ? 'a' : 'A';
        else if (Character.isWhitespace(c) || Character.isSpaceChar(c))
            c = ' ';
        if (c != lastc)
            buf.append(c);/*from   w  ww. j a  v a  2 s  . c o  m*/
        lastc = c;
    }
    return buf.toString();
}

From source file:Main.java

/**
 * @param str str/* ww  w .  ja  va 2 s . co  m*/
 * @return String
 */
public static String capitalizeFirstLetter(String str) {

    if (isEmpty(str)) {
        return str;
    }

    char c = str.charAt(0);
    return (!Character.isLetter(c) || Character.isUpperCase(c)) ? str
            : new StringBuilder(str.length()).append(Character.toUpperCase(c)).append(str.substring(1))
                    .toString();
}

From source file:Main.java

public static String trimToId(String aName) {
    String result = aName;/*from  w w  w. j a  v a  2s  .  co  m*/

    // if no name was given, generate an id
    if (result == null || result.isEmpty()) {
        return "id_" + java.util.UUID.randomUUID().toString();
    }
    // must be at least 2 characters long,must start with a letter
    else if (result.length() < 2 || !Character.isLetter(result.charAt(0))) {
        result = "id_" + result;
    }

    // capitalize, except first char (lower case)
    String[] words = result.split("\\W+"); // split into words
    result = ""; // reset result and build new
    for (int i = 0; i < words.length; i++) {
        result += (i == 0) ?
        // keep first word as is
                words[i] :
                // following words capitalize first char
                words[i].substring(0, 1).toUpperCase() + words[i].substring(1);
    }

    // umlauts, whitespaces and periods are not allowed
    result = result.replaceAll("\\s", "").replaceAll("\\.", "").replaceAll("\\u00c4", "Ae")
            .replaceAll("\\u00e4", "ae").replaceAll("\\u00d6", "Oe").replaceAll("\\u00f6", "oe")
            .replaceAll("\\u00dc", "Ue").replaceAll("\\u00fc", "ue").replaceAll("\\u00df", "ss");

    return result;
}

From source file:Main.java

public static boolean isXmlNameStartChar(char chr) {
    // [4] NameStartChar    ::= ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | 
    //                          [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | 
    //                          [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
    // http://www.w3.org/TR/REC-xml/#NT-Name

    return Character.isLetter(chr) || chr == ':' || chr == '_' || isInRange(chr, 0xC0, 0xD6)
            || isInRange(chr, 0xD8, 0xF6) || isInRange(chr, 0xF8, 0x2FF) || isInRange(chr, 0x370, 0x37D)
            || isInRange(chr, 0x37F, 0x1FFF) || isInRange(chr, 0x200C, 0x200D) || isInRange(chr, 0x2070, 0x218F)
            || isInRange(chr, 0x2C00, 0x2FEF) || isInRange(chr, 0x3001, 0xD7FF)
            || isInRange(chr, 0xF900, 0xFDCF) || isInRange(chr, 0xFDF0, 0xFFFD)
            || isInRange(chr, 0x10000, 0xEFFFF);
}

From source file:Main.java

private static String addSpaceIfRequired(String value, int index) {
    if (index == 0)
        return VOID_STRING;
    char precedingChar = value.charAt(index - 1);
    char thisChar = value.charAt(index);
    if (Character.isLowerCase(precedingChar) && Character.isUpperCase(thisChar)
            || Character.isLetter(precedingChar) && Character.isDigit(thisChar)
            || Character.isDigit(precedingChar) && Character.isLetter(thisChar)) {
        return SPACE;
    }/*from w w  w.  j av a2s.  c  o m*/
    if (index + 1 == value.length())
        return VOID_STRING;
    char nextChar = value.charAt(index + 1);
    if (Character.isUpperCase(precedingChar) && Character.isUpperCase(thisChar)
            && Character.isLowerCase(nextChar)) {
        return SPACE;
    }
    return VOID_STRING;
}