byte array to decimal convertion in java

Question

I am new to java. I receive the UDP data in byte array. Each elements of the byte array have the hexadecimal value. I need to convert each element to integer.

How to

Answer 1

Function : return unsigned value of byte array.

public static long bytesToDec(byte[] byteArray) {
    long total = 0;
    for(int i = 0 ; i < byteArray.length ; i++) {
        int temp = byteArray[i];
        if(temp < 0) {
            total += (128 + (byteArray[i] & 0x7f)) * Math.pow(2, (byteArray-1-i)*8); 
        } else {
            total += ((byteArray[i] & 0x7f) * Math.pow(2, (byteArray-1-i)*8));
        }
    }
    return total;
}