Java Hex Calculate toHEX1(byte b)

Description

utility method to convert a byte to a hexadecimal string.

License

Open Source License

Parameter

Parameter	Description
b	byte to be converted into hex

Return

hex representation of byte

Declaration

public static String toHEX1(byte b) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    /** array mapping hex value (0-15) to corresponding hex digit (0-9a-f). */
    public static final char[] HEX_DIGITS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd',
            'e', 'f' };

    /**/*from  w  w  w . j ava2  s  .c  o  m*/
     * utility method to convert a byte to a hexadecimal string.
     * <p>
     * the byte is converted to 2 hex symbols,
     * using the HEX_DIGITS array for the mapping.
     * @param b byte to be converted into hex
     * @return hex representation of byte
     */
    public static String toHEX1(byte b) {
        char[] buf = new char[2];
        int j = 0;
        buf[j++] = HEX_DIGITS[(b >>> 4) & 0x0F];
        buf[j++] = HEX_DIGITS[b & 0x0F];
        return new String(buf);
    }

    /**
     * utility method to convert a byte array to a hexadecimal string.
     * <p>
     * Each byte of the input array is converted to 2 hex symbols,
     * using the HEX_DIGITS array for the mapping.
     * @param ba array of bytes to be converted into hex
     * @return hex representation of byte array     
     */
    public static String toHEX1(byte[] ba) {
        int length = ba.length;
        char[] buf = new char[length * 2];
        for (int i = 0, j = 0, k; i < length;) {
            k = ba[i++];
            buf[j++] = HEX_DIGITS[(k >>> 4) & 0x0F];
            buf[j++] = HEX_DIGITS[k & 0x0F];
        }
        return new String(buf);
    }

    /**
     * utility method to convert a short array to a hexadecimal string.
     * <p>
     * Each word of the input array is converted to 4 hex symbols,
     * using the HEX_DIGITS array for the mapping.
     * @param ia array of shorts to be converted into hex
     * @return hex representation of short array     
     */
    public static String toHEX1(short[] ia) {
        int length = ia.length;
        char[] buf = new char[length * 4];
        for (int i = 0, j = 0, k; i < length;) {
            k = ia[i++];
            buf[j++] = HEX_DIGITS[(k >>> 12) & 0x0F];
            buf[j++] = HEX_DIGITS[(k >>> 8) & 0x0F];
            buf[j++] = HEX_DIGITS[(k >>> 4) & 0x0F];
            buf[j++] = HEX_DIGITS[k & 0x0F];
        }
        return new String(buf);
    }

    /**
     * utility method to convert an int to a hexadecimal string.
     * <p>
     * the int is converted to 8 hex symbols,
     * using the HEX_DIGITS array for the mapping.
     * @param i int to be converted into hex
     * @return hex representation of int
     */
    public static String toHEX1(int i) {
        char[] buf = new char[8];
        int j = 0;
        buf[j++] = HEX_DIGITS[(i >>> 28) & 0x0F];
        buf[j++] = HEX_DIGITS[(i >>> 24) & 0x0F];
        buf[j++] = HEX_DIGITS[(i >>> 20) & 0x0F];
        buf[j++] = HEX_DIGITS[(i >>> 16) & 0x0F];
        buf[j++] = HEX_DIGITS[(i >>> 12) & 0x0F];
        buf[j++] = HEX_DIGITS[(i >>> 8) & 0x0F];
        buf[j++] = HEX_DIGITS[(i >>> 4) & 0x0F];
        buf[j++] = HEX_DIGITS[i & 0x0F];
        return new String(buf);
    }

    /**
     * utility method to convert an int array to a hexadecimal string.
     * <p>
     * Each word of the input array is converted to 8 hex symbols,
     * using the HEX_DIGITS array for the mapping.
     * @param ia array of ints to be converted into hex
     * @return hex representation of int array     
     */
    public static String toHEX1(int[] ia) {
        int length = ia.length;
        char[] buf = new char[length * 8];
        for (int i = 0, j = 0, k; i < length;) {
            k = ia[i++];
            buf[j++] = HEX_DIGITS[(k >>> 28) & 0x0F];
            buf[j++] = HEX_DIGITS[(k >>> 24) & 0x0F];
            buf[j++] = HEX_DIGITS[(k >>> 20) & 0x0F];
            buf[j++] = HEX_DIGITS[(k >>> 16) & 0x0F];
            buf[j++] = HEX_DIGITS[(k >>> 12) & 0x0F];
            buf[j++] = HEX_DIGITS[(k >>> 8) & 0x0F];
            buf[j++] = HEX_DIGITS[(k >>> 4) & 0x0F];
            buf[j++] = HEX_DIGITS[k & 0x0F];
        }
        return new String(buf);
    }
}

Related

1. toHex(String txt)
2. toHex(String val)
3. toHex(StringBuffer buf, long value, int width)
4. toHex(StringBuilder s, byte b)
5. toHex00String(int c)
6. toHex16(int w)
7. toHex16(long l)
8. toHex4(int value)
9. toHex8(long x)