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Write a java application to simulate the following: O O users. User is the superclass of Student W users.User fields: id, name, address n: user input, no of Student / size of the class O O ■ users. Student fields: dept, cgpa users. Faculty is also a subclass of User ■ users. Faculty fields: designation, dept, salary, noOfPublications o docs. Assignment is a non-user class ■ docs.Assignment fields: title, dueDate, courseID, semester, description Now mypkg. MainClass has the main method O ■ Local to static main(): n, studArr, st=null, skd, a, choice, loop variable i ■ In MainClass, there is another static method called getStudent() to find Student instance from the array studArr as called by main in choice 2, follows: in static main, ■ there is an array of Student called studArr of size n ● there is a Faculty instance represented by the handle skd; there is a do-while loop having following choices: O choice==1, add a new Student to the class ■ //add a "new Student().setStudInfo()" to studArr o choice ==2, view details of a particular Student searchId: user input ■ Student st = getStudent (searchId, studArr); if(st != null) st.showStudInfo(); ■ else //error message o choice ==3, view details of ALL Students of the class instance.showStudInfo(); o choice =4, skd give assignment to ALL students ■ Assignment a = new Assignment(); ■ a.setAssignment(); ■skd.giveAssignment(a, studArr); ■ //assigns a to all of studArr ■//show count+1 lines, each line contains: assignmentTitle is given to studentId1 assignmentTitle is given to studentId2 assignmentTitle is given to studentId3 and so on... O choice==5, to exit the do-while loop