Proposed solution:

33 /** The payload */
34 private byte[] buf=null;
34.1 private Object obj;

291 final public Object getObject() {
291.1 if (obj == null) {
292 try

{ 293 obj = Util.objectFromByteBuffer(buf, offset, length); 294 }

295 catch(Exception ex)

{ 296 throw new IllegalArgumentException(ex); 297 }

297.1 }
297.2 return obj;
298 }