Java Utililty Methods Char Array to Byte Array

void char2byte(char[] chars, int offset, int len, byte[] result, int roffset)
charbyte

for (int i = 0; i < len; i++)
 result[roffset + i] = (byte) chars[offset + i];

byte[] charArrayToByteArray(char charBuf[])
Converts a character array (double byte chars) to a byte array.

if (charBuf == null)
 return null;
int iLen = charBuf.length;
byte buf[] = new byte[iLen];
for (int p = 0; p < iLen; p++)
 buf[p] = (byte) (charBuf[p]);
return buf;

byte[] charArrayToByteArray(char[] c)
char Array To Byte Array

int i = 1;
int j = 0;
int len = c.length;
if (c[0] == '0円') { 
 byte[] bytes = new byte[(len - 1) * 2];
 for (; i < len; i++) {
 char ch = c[i];
 bytes[j++] = (byte) ((ch >> 8) & 255);
...

byte[] charArrayToByteArray(char[] value)
convert char array value to byte array value

byte[] result = new byte[value.length];
for (int i = 0; i < value.length; i++)
 result[i] = (byte) value[i];
return result;

byte[] charArrayToByteArray(final char[] message)
Char array to byte array.

final byte[] payload = new byte[message.length];
for (int i = 0; i < message.length; i++) {
 payload[i] = (byte) (message[i] & 0xFF);
return payload;

byte[] charArrayToBytes(char[] chars)
char Array To Bytes

return charArrayToBytes(chars, chars.length);

byte[] chars2Bytes(char[] chars)
chars Bytes

byte[] bytes = new byte[chars.length * 2];
for (int i = 0; i < chars.length; i++) {
 bytes[i * 2] = (byte) ((int) chars[i] / 256);
 bytes[i * 2 + 1] = (byte) (chars[i] % 256);
return bytes;

byte[] chars2Bytes(char[] chars)
chars Bytes

if (null == chars) {
 return null;
Charset cs = Charset.forName("UTF-8");
CharBuffer cb = CharBuffer.allocate(chars.length);
cb.put(chars);
cb.flip();
ByteBuffer bb = cs.encode(cb);
...

byte[] charsToBytes(char[] chars)
chars To Bytes

byte[] b = new byte[chars.length << 1];
for (int i = 0; i < chars.length; i++) {
 char strChar = chars[i];
 int bpos = i << 1;
 b[bpos] = (byte) ((strChar & 0xFF00) >> 8);
 b[bpos + 1] = (byte) (strChar & 0x00FF);
return b;
...

byte[] charsToBytes(char[] chars)
Converts chars to bytes without using any external functions that might allocate additional buffers for the potentially sensitive data.

byte[] bytes = new byte[chars.length * 2];
for (int i = 0; i < chars.length; i++) {
 char v = chars[i];
 bytes[i * 2] = (byte) (0xff & (v >> 8));
 bytes[i * 2 + 1] = (byte) (0xff & (v));
return bytes;