I have a 2-dim array of type int and I want to convert it to an array
of byte. How can I do that? Also, if my 2-dim int array is one dimention
can I use typecast as in the example below?
private byte[] getData()
{
byte []buff;
int []data = new int[5];
//populate data[]
buff = (byte[]) data; <- CAN I DO THIS?
return buff;
}
You are right, thank you. mM int numbers are dynamic and I do not have a control on their value. I need to convert each number into 4 bytes.
I was trying to avoid doing the followong conversion:
buff[i+0] = (byte)(value >> 24);
buf[i+1] = (byte)(value >> 16);
buf[i+2] = (byte)(value >> 8);
buf[i+3] = (byte)(value);
hi, I suggest you make an array of byte arrays
--> Byte[][] and use one row for each number
you can do 2 things,
take each cipher of one number and put one by one in each column of the row correspondent to that number. of course it may take too much room if the int[] is too big, but that is the easiest way I think
the other way is dividing your number into bitsets(class BitSet) with sizes of 8 bits and then you can save each bit into each column of your array. and you still have one number in each row. To put your numbers back use the same class.
Maybe someone has an easier way, I couldnt think of any.
What would be handy, is something that was very much possible, when I programmed in Turbo Pascal?
int arr[]=new arr[1000];
byte arr_ref[]=arr;
They would share a memoryspace? Is that possible. It would help for example while using memoryImageSource with int array's I could access the pixel color values, without those <<>&&&&&>&&>&>&> operators.
No, it's not possible for a byte[] reference and an int[] reference to point to the same object. Java is strongly typed, and in Java arrays are objects. The byte[] class and the int[] class both subclasses of Object, but are otherwise unrelated. You can cast a byte[] reference to an Object reference and vice versa, and similarly for int[], but you cannot cast between int[] and byte[] references.
