java 2 code ,,please help me with this question fast as you can

java 2 code MyPost Files # attachments: Files[5] likesNo: int postDesc String MyPost MyPost(int -sizeBytes int getSize(): int new Post interface *printAllInfo :v oid New Post History Post post Year: int EditPost():void Part II (10 Points) A) [6 pointsWrite the code of the system. B) (4 points) Write a test class that defines an array of 20 MyPost objects, then print on screen the summation of likes on each HistoryPost object