Example usage for java.lang Character digit

Introduction

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

Prototype

public static int digit(int codePoint, int radix)

Source Link

Document

Returns the numeric value of the specified character (Unicode code point) in the specified radix.

Usage

From source file:Main.java

public static byte[] hexStringToByteArray(String hexString) {
    int len = hexString.length();
    byte[] data = new byte[(len / 2)];
    for (int i = 0; i < len; i += 2) {
        data[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4)
                + Character.digit(hexString.charAt(i + 1), 16));
    }/*  ww  w.jav a  2s  . c o  m*/
    return data;
}

From source file:Main.java

public static byte[] hexToBytes(String hex) {
    try {/* w  w  w . j a va2  s  . co  m*/
        int length = hex.length();
        byte[] bytes = new byte[length / 2];
        for (int i = 0; i < length; i += 2) {
            bytes[i / 2] = (byte) ((Character.digit(hex.charAt(i), 16) << 4)
                    + Character.digit(hex.charAt(i + 1), 16));
        }
        return bytes;
    } catch (Exception e) {
        Log.e(TAG, "Got Exception: " + e.toString());
        return new byte[0];
    }
}

From source file:Main.java

public static byte[] hexStringToByteArray(String s) {
    if ((s.length() % 2) != 0) {
        throw new IllegalArgumentException("Bad input string: " + s);
    }//w  ww  .  j  av  a 2  s . c  o m

    int len = s.length();
    byte[] data = new byte[len / 2];
    for (int i = 0; i < len; i += 2) {
        data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i + 1), 16));
    }
    return data;
}

From source file:Main.java

public static Integer[] getDigits(String number) {
    List<Integer> digits = new ArrayList<Integer>();
    for (int i = 0; i < number.length(); i++) {
        int j = Character.digit(number.charAt(i), 10);
        digits.add(j);/*from   w w  w  . ja v a2s  .c  om*/
    }
    return digits.toArray(new Integer[] {});
}

From source file:Util.java

/**
 * Creates byte array representation of HEX string.<br>
 * /*  w w w . j  a  v  a 2s  .c o m*/
 * @param s
 *            string to parse
 * @return
 */
public static byte[] fromHexString(String s) {
    int length = s.length() / 2;
    byte[] bytes = new byte[length];
    for (int i = 0; i < length; i++) {
        bytes[i] = (byte) ((Character.digit(s.charAt(i * 2), 16) << 4)
                | Character.digit(s.charAt((i * 2) + 1), 16));
    }
    return bytes;
}

From source file:Main.java

public static boolean isInteger(String s, int radix) {
    if (s.isEmpty())
        return false;
    for (int i = 0; i < s.length(); i++) {
        if (i == 0 && s.charAt(i) == '-') {
            if (s.length() == 1)
                return false;
            else//  ww w. jav a2  s .c  o  m
                continue;
        }
        if (Character.digit(s.charAt(i), radix) < 0)
            return false;
    }
    return true;
}

From source file:Main.java

public static byte[] hexStringToByteArray(String hexString) {
    int len = hexString.length();
    byte[] data = new byte[(len / SECOND_BITMASK)];
    for (int i = 0; i < len; i += SECOND_BITMASK) {
        data[i / SECOND_BITMASK] = (byte) ((Character.digit(hexString.charAt(i),
                FIFTH_BITMASK) << THIRD_BITMASK)
                + Character.digit(hexString.charAt(i + FIRST_BITMASK), FIFTH_BITMASK));
    }//from   w  w  w.  ja  v  a 2 s .c o  m
    return data;
}

From source file:Main.java

public static String decompress(String hexString) throws UnsupportedEncodingException {
    final byte[] byteArray = new byte[hexString.length() / 2];
    int k = 0;//from  ww w  .  jav a  2  s.  c  om
    for (int i = 0; i < byteArray.length; i++) {
        byte high = (byte) (Character.digit(hexString.charAt(k), 16) & 0xff);
        byte low = (byte) (Character.digit(hexString.charAt(k + 1), 16) & 0xff);
        byteArray[i] = (byte) (high << 4 | low);
        k += 2;
    }

    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ByteArrayInputStream in = new ByteArrayInputStream(byteArray);

    try {
        GZIPInputStream gunzip = new GZIPInputStream(in);
        byte[] buffer = new byte[256];
        int n;
        while ((n = gunzip.read(buffer)) >= 0) {
            out.write(buffer, 0, n);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }

    return out.toString();
}

From source file:Main.java

public static byte[] hexStringToByteArray(String hexString) {
    int len = hexString.length();
    byte[] data = new byte[(len / SECOND_BITMASK)];
    for (int i = EventIDNotificationAdded; i < len; i += SECOND_BITMASK) {
        data[i / SECOND_BITMASK] = (byte) ((Character.digit(hexString.charAt(i),
                FIFTH_BITMASK) << THIRD_BITMASK)
                + Character.digit(hexString.charAt(i + FIRST_BITMASK), FIFTH_BITMASK));
    }/*www  . j a  va 2s  .c o  m*/
    return data;
}

From source file:Main.java

public static boolean isIsracardValid(String cardNumber) {
    int sum = 0;//from w w w  .  j a  v  a 2 s .c  o  m
    int len = cardNumber.length();

    // If the number is less than 9 digits
    if (len == 8) {
        cardNumber = "0" + cardNumber;
        len++;
    }

    for (int i = 0; i < len; i++) {
        final char c = cardNumber.charAt(i);
        if (!Character.isDigit(c)) {
            throw new IllegalArgumentException(String.format("Not a digit: '%s'", c));
        }

        final int digit = Character.digit(c, 10);
        sum = sum + (digit * (9 - i));
    }
    return sum % 11 == 0;
}