Example usage for java.lang String charAt

Introduction

In this page you can find the example usage for java.lang String charAt.

Prototype

public char charAt(int index)

Source Link

Document

Returns the char value at the specified index.

Usage

From source file:Main.java

static int getNumDashes(final String category) {
    int i = 0;//from  w ww  .  j a v  a2 s  .  c  o  m
    while (i < category.length() && (int) category.charAt(i) == (int) '-') {
        i++;
    }
    return i;
}

From source file:Main.java

public static char RandomCharFromStr(String str) {
    Random random = new Random();
    int index = random.nextInt(str.length());
    return str.charAt(index);
}

From source file:Main.java

private static void validateLocalePart(String localePart) {
    for (int i = 0; i < localePart.length(); i++) {
        char ch = localePart.charAt(i);
        if (ch != '_' && ch != ' ' && !Character.isLetterOrDigit(ch)) {
            throw new IllegalArgumentException(
                    "Locale part \"" + localePart + "\" contains invalid characters");
        }/*w w  w  .ja  v  a2s .co  m*/
    }
}

From source file:Main.java

public static boolean isEmptyText(Text txt) {
    String s = txt.getData();
    for (int i = 0; i < s.length(); ++i) {
        if (!Character.isWhitespace(s.charAt(i)))
            return false;
    }// w ww.  ja v  a  2s .  c  o m
    return true;
}

From source file:Main.java

public static void writeString(final DataOutputStream output, final String value) throws IOException {
    for (int i = 0; i < value.length(); i++) {
        output.write(value.charAt(i));
    }//from   ww  w . j  a va 2  s.  com
}

From source file:Main.java

private static String capitalize(String s) {
    if (s == null || s.length() == 0) {
        return "";
    }//from   ww  w  .  j a v a 2 s  .c  o m
    char first = s.charAt(0);
    if (Character.isUpperCase(first)) {
        return s;
    } else {
        return Character.toUpperCase(first) + s.substring(1);
    }
}

From source file:Main.java

public static String capitalize(String s) {
    if (s == null || s.length() == 0) {
        return "";
    }// ww  w. j a va2 s.c  o  m
    char first = s.charAt(0);
    if (Character.isUpperCase(first)) {
        return s;
    } else {
        return Character.toUpperCase(first) + s.substring(1);
    }
}

From source file:Main.java

/**
 * Returns the {@code String} instance with detecting the Japanese encoding.
 * @throws UnsupportedEncodingException if it fails to detect the encoding.
 *//*ww  w . j  av  a 2s  . co m*/
static String toStringWithEncodingDetection(ByteBuffer buffer) throws UnsupportedEncodingException {
    for (String encoding : JAPANESE_ENCODING_LIST) {
        buffer.position(0);
        try {
            Charset charset = Charset.forName(encoding);
            CharBuffer result = charset.newDecoder().onMalformedInput(CodingErrorAction.REPORT)
                    .onUnmappableCharacter(CodingErrorAction.REPORT).decode(buffer);
            String str = result.toString();
            if (str.length() > 0 && str.charAt(0) == 0xFEFF) {
                // Remove leading BOM if necessary.
                str = str.substring(1);
            }
            return str;
        } catch (Exception e) {
            // Ignore exceptions, and retry next encoding.
        }
    }

    throw new UnsupportedEncodingException("Failed to detect encoding");
}

From source file:Main.java

public static boolean isAlphaString(String s) {
    boolean b = true;
    for (int i = 0; i < s.length(); i++) {
        if (!isAlpha(s.charAt(i))) {
            b = false;//from ww  w.j a v  a  2s . c  om
            break;
        }
    }
    return b;
}

From source file:Main.java

public static String capitial(String str) {
    if (str == "" || str.length() == 0)
        return "";
    char first = str.charAt(0);
    if (Character.isUpperCase(first))
        return str;
    else/*from   w w  w  .  ja v a 2  s  . c  o  m*/
        return Character.toUpperCase(first) + str.substring(1);
}