Java Utililty Methods Integer to Byte

List of utility methods to do Integer to Byte

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Description

The list of methods to do Integer to Byte are organized into topic(s).

Method

byteasByte(int a)
Not defining an asByte(long) method, since asByte((int)aLong) works. 
if (a != (byte) a) {
    throw new ArithmeticException("overflow: " + a);
return (byte) a;
byteint2bcdByte(int hRadix10, int lRadix10)
intbcd Byte 
int bcd = ((hRadix10 & 0x0F) << 4) + (lRadix10 & 0x0F);
return (byte) bcd;
voidint2bin(byte[] out, int offset, int i)
intbin 
out[offset + 0] = (byte) (i >> 24);
out[offset + 1] = (byte) (i >> 16 & 0xff);
out[offset + 2] = (byte) (i >> 8 & 0xff);
out[offset + 3] = (byte) (i & 0xff);
voidint2byte(byte[] output, int[] input, int len)
Encodes input (int) into output (bytes). 
int i = 0;
if ((len % 4) != 0) {
    println("Error: int2byte(..., len), len not multiple of 4");
    println("Error: result will probably be wrong");
for (int j = 0; j < len; j += 4) {
    output[j + 0] = (byte) (input[i] & 0xff);
    output[j + 1] = (byte) ((input[i] >>> 8) & 0xff);
...
byte[]int2byte(final int i)
Convert int to byte[4] 
final byte[] arr = new byte[4];
arr[0] = (byte) i;
arr[1] = (byte) (i >>> 8);
arr[2] = (byte) (i >>> 16);
arr[3] = (byte) (i >>> 24);
return arr;
byte[]int2byte(int i)
intbyte 
byte dest[] = new byte[4];
dest[3] = (byte) (i & 0xff);
dest[2] = (byte) (i >>> 8 & 0xff);
dest[1] = (byte) (i >>> 16 & 0xff);
dest[0] = (byte) (i >>> 24 & 0xff);
return dest;
byte[]int2Byte(int intValue)
int Byte 
byte[] b = new byte[4];
for (int i = 0; i < 4; i++) {
    b[i] = (byte) (intValue >> 8 * (3 - i) & 0xFF);
return b;
voidint2byte(int ival, byte b[], int offset)
intbyte 
int bits = 32;
for (int i = 0; i < 4; i++) {
    bits -= 8;
    b[offset + i] = (byte) ((ival >> bits) & 0xff);
byte[]int2byte(int value)
Converts an integer into a byte array of hex 
if (value < 0) {
    return new byte[] { (byte) (value >>> 24 & 0xFF), (byte) (value >>> 16 & 0xFF),
            (byte) (value >>> 8 & 0xFF), (byte) (value & 0xFF) };
} else if (value <= 0xFF) {
    return new byte[] { (byte) (value & 0xFF) };
} else if (value <= 0xFFFF) {
    return new byte[] { (byte) (value >>> 8 & 0xFF), (byte) (value & 0xFF) };
} else if (value <= 0xFFFFFF) {
...
byte[]int2byte(int[] ia)
intbyte 
int length = ia.length;
byte[] ba = new byte[length * 4];
for (int i = 0, j = 0, k; i < length;) {
    k = ia[i++];
    ba[j++] = (byte) ((k >>> 24) & 0xFF);
    ba[j++] = (byte) ((k >>> 16) & 0xFF);
    ba[j++] = (byte) ((k >>> 8) & 0xFF);
    ba[j++] = (byte) (k & 0xFF);
...