calculating CRC32

[chrisalex via Digitalmars-d-learn]

I'm trying to calculate CRC32 and it keeps giving me the wrong 
result.

void main(string[] args)
{
   CRC32Digest test = new CRC32Digest();
   ubyte[] data = [1,5,2,3,4];
   test.put(data);
   auto data2 = test.finish();
   writeln((data2[0] << 24) | (data2[1] << 16) | ((data2[2]) << 
8) | (data2[3]));
   writeln((data2[0]) | (data2[1] << 8) | ((data2[2]) << 16) | 
(data2[3] << 24));
}

this writes out

728586467
-480744149

but when calculating CRC32 with java, I get

3814223147

Not sure what I'm doing wrong. I tried reversing data[] as well.