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MyPost Files -sizeBytes sint getSize(): int #attachments: Files[5] likesNo: int postDesc: String MyPost My Post(int) addLikeO:void new Post interface +printAllInfo :void New Post History Post postYear: int editPost():void Part I Write an example for each of the following: 1. public method: 2. Static Variable 3. Overriding 4. Overloading 5. Super class Part II (10 Points) A) [6 points]Write 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 History Post object