How to output binary data to a file in Java?

Question

I\'m trying to write data to a file in binary format for compression. The data consists entirely of floating points so I decided to quantize the data to an intergers between

Answer 1

What about the DataOutputStream. You can write int which contains 2 of your data integers.

DataOutputStream dos = new DataOutputStream(new FileOutputStream());
ArrayList list = new ArrayList();
int sum;
for( int i = 0; i < list.size(); i++ ) {
    if(i%2!=0){
        sum |= list.get( i ).intValue()<<16;
        dos.writeInt( sum );
    } else {
        sum = list.get( i ).intValue();
    }
}