code: public static byte[] getByteArray(int size)
      {
          byte[][] pool = (byte[][])__pools.get();
          boolean full=true;
          for (int i=pool.length;i-->0;)
          {
              if (pool[i]!=null && pool[i].length==size)
              {
                  byte[]b = pool[i];
                  pool[i]=null;
                  return b;
              }
              else
                  full=false;
          }
  
          if (full)
              for (int i=pool.length;i-->0;)
                  pool[i]=null;
          
          return new byte[size];
      }
docs: Get a byte array from the pool of known size.
  @param size Size of the byte array.
  @return Byte array of known size.