Android String to Byte Array Convert toBytes(String digits, int radix)

Description

to Bytes

Declaration

public static byte[] toBytes(String digits, int radix)
        throws IllegalArgumentException, NumberFormatException 

Method Source Code

//package com.java2s;

public class Main {

    public static void toBytes(int value, byte[] dest, int destPos) {
        for (int i = 0; i < 4; i++) {
            dest[i + destPos] = (byte) (value >> ((7 - i) * 8));
        }//ww  w  . ja va2 s  . com
    }

    public static byte[] toBytes(int value) {
        byte[] dest = new byte[4];
        toBytes(value, dest, 0);
        return dest;
    }

    public static void toBytes(long value, byte[] dest, int destPos) {
        for (int i = 0; i < 8; i++) {
            dest[i + destPos] = (byte) (value >> ((7 - i) * 8));
        }
    }

    public static byte[] toBytes(long value) {
        byte[] dest = new byte[8];
        toBytes(value, dest, 0);
        return dest;
    }

    public static byte[] toBytes(String digits, int radix)
            throws IllegalArgumentException, NumberFormatException {
        if (digits == null) {
            return null;
        }
        if (radix != 16 && radix != 10 && radix != 8) {
            throw new IllegalArgumentException("For input radix: \""
                    + radix + "\"");
        }
        int divLen = (radix == 16) ? 2 : 3;
        int length = digits.length();
        if (length % divLen == 1) {
            throw new IllegalArgumentException("For input string: \""
                    + digits + "\"");
        }
        length = length / divLen;
        byte[] bytes = new byte[length];
        for (int i = 0; i < length; i++) {
            int index = i * divLen;
            bytes[i] = (byte) (Short.parseShort(
                    digits.substring(index, index + divLen), radix));
        }
        return bytes;
    }
}

Related

1. stringToBytes(String string)
2. String2Byte(String hexString)
3. StringToByteArray(String input)
4. StrToBcdBytes(String s)
5. Str2Bcd(String asc)
6. toBytes(String hexString)
7. toBytes(String hexString)
8. toBytes(String s)
9. stringToByteString(String string)