Implementing BookArrayBag Book -title: String - year : int + Book ( title : String, year: int) + getTitle(): String + getYear(): int + setTitle (title : String): void + setYear (year: int) : void + equals ( obj: Object): boolean + toString(): String BookArrayBag - data : Book[] manyltems : int + BookBag () + BookBag ( capacity: int ) + add (b: Book ) : void + remove (b: Book ) : void + size(): int + grab (index : int ): Book + find (b: Book): Book + countOccurrences (b:Book): int + toString(): String + max(): Book *Two books are equal when they have the same title (case insensitive). ICS 240-50: Introduction to Data Structures - Spring 2022 Exercise 2: replace method in IntArrayBag Implement an instance method belonging to the IntArrayBag class that takes two input parameters, oldVal and newVal. The method replaces each oldVal element in the array with newVal. Make sure to include the method header. Exercise 3: countInYear method in BookArrayBag - Consider the BookArrayBag from slide #6 in the lecture-03-jan-28.pptx. Write an instance method belonging to BookArrayBag that takes one integer input, called year, and returns as output the number of books published in that year