public ByteBuffer readFully(long pos,int len){
  ByteBuffer dst=ByteBuffer.allocate(len);
  DataUtils.readFully(file,pos,dst);
  readCount++;
  readBytes+=len;
  return dst;
}

public ByteBuffer readFully ( long pos , int len ) { ByteBuffer dst = ByteBuffer . allocate ( len ) ; DataUtils . readFully ( file , pos , dst ) ; readCount ++ ; readBytes += len ; return dst ; }
read from the file .
