Example usage for java.lang Character forDigit

Introduction

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

Prototype

public static char forDigit(int digit, int radix)

Source Link

Document

Determines the character representation for a specific digit in the specified radix.

Usage

From source file:Main.java

private static String intToHex2(final int i) {
    final char hex_2[] = { Character.forDigit((i >> 4) & 0x0f, 16), Character.forDigit(i & 0x0f, 16) };
    return new String(hex_2).toUpperCase(Locale.ENGLISH);
}

From source file:Main.java

private static String toHexEncode(byte[] bytes) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < bytes.length; i++) {
        int low = bytes[i] & 0xF;
        int high = (bytes[i] >>> 4) & 0xF;
        sb.append(Character.forDigit(high, 16));
        sb.append(Character.forDigit(low, 16));
    }//from   www .  j  a v  a 2 s .  c o m
    return sb.toString();
}

From source file:Main.java

public static String bytesToHexString(byte[] src) {
    StringBuilder stringBuilder = new StringBuilder();
    if (src == null || src.length <= 0) {
        return null;
    }//from  w  w  w.  j av a  2s.  c om
    char[] buffer = new char[2];
    for (int i = 0; i < src.length; i++) {
        buffer[0] = Character.forDigit((src[i] >>> 4) & 0x0F, 16);
        buffer[1] = Character.forDigit(src[i] & 0x0F, 16);
        stringBuilder.append(buffer);
    }
    return stringBuilder.toString();
}

From source file:Main.java

private static String toHex(byte[] results) {
    if (results == null)
        return null;
    StringBuilder hexString = new StringBuilder();
    for (int i = 0; i < results.length; i++) {
        int hi = (results[i] >> 4) & 0x0f;
        int lo = results[i] & 0x0f;
        hexString.append(Character.forDigit(hi, 16)).append(Character.forDigit(lo, 16));
    }//from   w ww.  jav  a  2s . co m
    return hexString.toString();
}

From source file:Main.java

public static void encodeHexString(byte[] bytes, StringBuilder buffer) {
    for (byte b : bytes) {
        int hi = (b >>> 4) & 0x0f;
        int lo = (b >>> 0) & 0x0f;
        buffer.append(Character.forDigit(hi, 16));
        buffer.append(Character.forDigit(lo, 16));
    }/*from w w w.  j  a va2  s  .  c om*/
}

From source file:Main.java

/**
 * encode Unicode string/*from   www  .  j a v a2s .co  m*/
 *
 * @param s s
 * @return string
 */
public static String encodeUnicodeStr(String s) {
    StringBuilder sb = new StringBuilder(s.length() * 3);
    for (char c : s.toCharArray()) {
        if (c < 256) {
            sb.append(c);
        } else {
            sb.append("\\u");
            sb.append(Character.forDigit((c >>> 12) & 0xf, 16));
            sb.append(Character.forDigit((c >>> 8) & 0xf, 16));
            sb.append(Character.forDigit((c >>> 4) & 0xf, 16));
            sb.append(Character.forDigit((c) & 0xf, 16));
        }
    }
    return sb.toString();
}

From source file:Main.java

public static String bytesToHexString(byte[] paramArrayOfByte) {
    StringBuilder localStringBuilder = new StringBuilder();
    if ((paramArrayOfByte == null) || (paramArrayOfByte.length <= 0)) {
        return null;
    }// w  ww. j  a  va  2s.c om
    char[] arrayOfChar = new char[2];
    for (int i = 0;; i++) {
        if (i >= paramArrayOfByte.length) {
            return localStringBuilder.toString().toUpperCase();
        }
        arrayOfChar[0] = Character.forDigit(0xF & paramArrayOfByte[i] >>> 4, 16);
        arrayOfChar[1] = Character.forDigit(0xF & paramArrayOfByte[i], 16);
        localStringBuilder.append(arrayOfChar);
    }
}

From source file:Main.java

private static String md5(String in) {
    MessageDigest digest;/*w  w w.j ava  2  s.  c o m*/
    try {
        digest = MessageDigest.getInstance("MD5");
        digest.reset();
        digest.update(in.getBytes());
        byte[] a = digest.digest();
        int len = a.length;
        StringBuilder sb = new StringBuilder(len << 1);
        for (int i = 0; i < len; i++) {
            sb.append(Character.forDigit((a[i] & 0xf0) >> 4, 16));
            sb.append(Character.forDigit(a[i] & 0x0f, 16));
        }
        return sb.toString();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static String md5(String s) {
    try {//w  w  w . ja v  a2 s.c  o  m
        MessageDigest digester = MessageDigest.getInstance("MD5");
        digester.update(s.getBytes("UTF-8"));
        byte[] a = digester.digest();
        int len = a.length;
        StringBuilder sb = new StringBuilder(len << 1);

        for (int i = 0; i < len; i++) {
            sb.append(Character.forDigit((a[i] & 0xf0) >> 4, 16));
            sb.append(Character.forDigit(a[i] & 0x0f, 16));
        }

        return sb.toString();
    } catch (UnsupportedEncodingException e) {
        return "";
    } catch (NoSuchAlgorithmException e) {
        return "";
    }
}

From source file:Main.java

public static String md5(final String in) {
    MessageDigest digest;//w ww . j av a2 s  .  c  o  m
    try {
        digest = MessageDigest.getInstance("MD5");
        digest.reset();
        digest.update(in.getBytes());
        final byte[] a = digest.digest();
        final int len = a.length;
        final StringBuilder sb = new StringBuilder(len << 1);
        for (int i = 0; i < len; i++) {
            sb.append(Character.forDigit((a[i] & 0xf0) >> 4, 16));
            sb.append(Character.forDigit(a[i] & 0x0f, 16));
        }
        return sb.toString();
    } catch (final NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return null;
}