Java转换字节数组(byte array)为整形(int)

Java转换字节数组(byte array)为整形(int)

/**
 * Convert the byte array to an int.
 *
 * @param b The byte array
 * @return The integer
 */
public static int byteArrayToInt(byte[] b) {
    return byteArrayToInt(b, 0);
}
/**
 * Convert the byte array to an int starting from the given offset.
 *
 * @param b The byte array
 * @param offset The array offset
 * @return The integer
 */
public static int byteArrayToInt(byte[] b, int offset) {
    int value = 0;
    for (int i = 0; i < 4; i++) {
        int shift = (4 - 1 - i) * 8;
        value += (b[i + offset] & 0x000000FF) << shift;
    }
    return value;
}