Java Utililty Methods Byte Array to Int

return (byte2int(value1) + byte2int(value2) * 256);

int value = 0;
int shift = 0;
for (byte b : bytes) {
    value |= (0xff & b) << shift;
    shift += 8;
return value;

int intLen = ary.length / 4;
int[] aryInt = new int[intLen];
for (int i = 0; i < aryInt.length; i++) {
    byte[] tmp = new byte[4];
    for (int j = 0; j < tmp.length; j++) {
        tmp[j] = ary[i * 4 + j];
    aryInt[i] = _bytes2int(tmp);
...

return bytes2int(b, 0);

int sum = 0;
int end = start + len;
for (int i = start; i < end; i++) {
    int n = (int) b[i] & 0xff;
    n <<= (--len) * 8;
    sum = n + sum;
return sum;
...

return (buf[0] << 24) | ((buf[1] & 0xff) << 16) | ((buf[2] & 0xff) << 8) | (buf[3] & 0xff);

int num = 0;
for (int i = 0; i < 4; i++) {
    num <<= 8;
    num |= (bytes[i] & 0xff);
return num;

int result = 0;
for (int i = 0; i < 4; i++) {
    result = (result << 8) - Byte.MIN_VALUE + (int) bytes[i];
return result;

if (bytes == null) {
    return 0;
switch (bytes.length) {
case 1:
    return bytes[0] & 0xFF;
case 2:
    return (bytes[0] & 0xFF) << 8 | bytes[1] & 0xFF;
...

int result = 0;
for (int i = 0; i < 4; i++)
    result += bytes[i] << 8 * (4 - i - 1);
return result;