Java Utililty Methods Byte Array to Int

List of utility methods to do Byte Array to Int

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Description

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

Method

intbytesToInt(byte[] b, int offset)
bytes To Int 
int value = 0;
for (int i = 0; i < 4; i++) {
    int shift = (4 - 1 - i) * 8;
    value += (b[i + offset] & 0x000000FF) << shift;
return value;
intbytesToInt(byte[] b, int offset)
bytes To Int 
return (b[offset + 0] & 255) << 24 | (b[offset + 1] & 255) << 16 | (b[offset + 2] & 255) << 8
        | (b[offset + 3] & 255);
intbytesToInt(byte[] buf, int offset)
Converts a 4 byte array of unsigned bytes to a singed long. 
int retval = 0;
int i = 0;
for (; i < 3; ++i) {
    retval |= buf[i + offset] & 0xFF;
    retval <<= 8;
retval |= buf[i + offset] & 0xFF;
return retval;
...
intbytesToInt(byte[] buf, int startIdx)
bytes To Int 
return ((0xff & buf[startIdx]) << 24) | ((0xff & buf[startIdx + 1]) << 16)
        | ((0xff & buf[startIdx + 2]) << 8) | (0xff & buf[startIdx + 3]);
intbytesToInt(byte[] buff, int off, int len)
Utility methods for working with bytes and byte buffers 
int num = 0;
int shift = 0;
for (int i = off + len - 1; i >= off; i--) {
    num += (buff[i] & 0xFF) << shift;
    shift += 8;
return num;
intbytesToInt(byte[] bytes)
bytes To Int 
int value = 0;
for (int i = 0; i < 4; i++) {
    int shift = (4 - 1 - i) * 8;
    value += (bytes[i] & 0x000000FF) << shift;
return value;
intbytesToInt(byte[] bytes)
Converts a byte array to an int. 
int value = 0;
for (int i = 0; i < bytes.length; i++) {
    int shift = 8 * i;
    value += (bytes[i] & 0xFF) << shift;
return value;
intbytesToInt(byte[] bytes)
bytes To Int 
int q3 = bytes[3] << 24;
int q2 = bytes[2] << 16;
int q1 = bytes[1] << 8;
int q0 = bytes[0];
if (q2 < 0)
    q2 += 16777216;
if (q1 < 0)
    q1 += 65536;
...
intbytesToInt(byte[] bytes)
Converts a byte array to an int. 
assert bytes != null && bytes.length <= 4;
final int BYTE_SIZE = 8;
int value = 0;
for (int i = 0; i < bytes.length; i++) {
    int shift = BYTE_SIZE * i;
    value += (bytes[i] & 0xff) << shift;
return value;
...
intbytesToInt(byte[] bytes)
Converts a byte array into an integer 
int result = new Integer((int) (0xff & bytes[0]) << 24 | (int) (0xff & bytes[1]) << 16
        | (int) (0xff & bytes[2]) << 8 | (int) (0xff & bytes[3]) << 0);
return result;