Homework Assignment Chapter 4b Create a Java Project folder named Chap4b Create a class named Student 1. The Student class will contain private instance data fields for these fields only: studentiD (String), test1 (int), test2 (int), test3 (int) 2. Define a final and static constant for the divisor. 3. Create one constructor with parameters for all instance data fields. 4. Create getters and setters for all instance data fields. 5. Provide a method called computeTotal() which does not receive any parameters. This method creates a total of all test scores and returns the integer total to the driver program. 6. Provide a method called computeAverage() which receives the total from the driver program. This method computes the average test score and returns the double average test score for an object to the driver program. Use the constant. 7. Create a displaylnfo() method that receives two parameters, the integer total and the double average being passed from the driver program. This method displays student ID, all test scores, the total, and the average test score. Use "\t" for indentation on some output lines. a. Even though technically unnecessary, use get methods or use the this reference to display the student ID and test scores. b. Use the total and the average test score passed to this method to display the total and the average.

Computer programming

Exercise 1-Account class • Design a class named Account that contains : • A private int data field named id for the account • A private double data field named balance for the account • A privet Date data field named dateCreated that stores the date when the account was created • A no-arg constructor that creates a default account • A constructor that creates an account with the specified id and initial balance • The getters (i.e., accessors) and setters (i.e., mutators) methods for id and balance • The getter method for dateCreated • A method named withdraw that withdraws a specified amount from the account • A method named deposit that deposits a specified amount to the account

True or False ___(1) An abstract class can have fields. ___(2) You can create an object from an abstract class ​_ _(3) An abstract class can have both abstract methods and methods that have method body

7. When a class contains objects of another class, the relationship is called a whole-part relationship or composition. The relationship created is also called a has-a relationship. Discuss some of the possible issues with composition, such as the long statement: Outputsales.getHighestPaidEmployee().getHireDate().getYear().

Create a Class called Transaction with: instance variables: stock - your stock class type - char -> b or s (buy/sell) quantity - can be fractional price - buy/sell price when - LocalDate   constructors: constructor with parameters for stock, type and quantity. - sets the price from the stock price instance variable - sets when from LocalDate   getters and setters for each instance variable

Create three files: Student.java - Abstract Class definition ENGRStudent.java - Derived Class definition Client.java - Contains main() method (1) Implement the abstract Student class with the following specifications: 3 private members String name int ID int yearAdmitted 1 constructors (public) A constructor with that accepts the student’s name, ID, and yearAdmitted as arguments. These values should be assigned to the object’s name, ID, and yearAdmitted fields. 2 public member methods A method named toString() that returns the values of name, ID, and yearAdmitted with String data type A abstract method name getRemainingHrs with int data type (2) Implement the derived class ENGRStudent class with the following specifications: 3 final private members with the following values : int MATHSCHRS=32 int MAJOR_HRS=66 int GenEdHrs=29 3 private members: int mathScHrs; int majorHrs; int GenEdHrs; 1 constructors (public) A constructor that accepts the student’s name, ID, and yearAdmitted…

class IndexItem { public: virtual int count() = 0; virtual void display()= 0; };class Book : public IndexItem { private: string title; string author; public: Book(string title, string author): title(title), author(author){} virtual int count(){ return 1; } virtual void display(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };class Category: public IndexItem { private: /* fill in the private member variables for the Category class below */ ? int count; public: Category(string name, string code): name(name), code(code){} /* Implement the count function below. Consider the use of the function as depicted in main() */ ? /* Implement the add function which fills the category with contents below. Consider the use of the function as depicted in main() */ ? virtualvoiddisplay(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };

Sequence diagram Create a UML sequence diagram that will show your clients how the system’s classes will interact when customers are buying their flight tickets on the booking website. How to create your assignment Review the code responsible for adding a new item. Make a sequence diagram that captures the interactions of objects in the app when a new item is added. Your sequence diagram should contain the following classes: AddItemActivity ItemList Dimensions Item And contain calls of the following methods: onCreate() loadItems() saveItem() Dimensions constructor Item constructor addItem() saveItems() Lastly, the activation of AddItemActivity should start with the call to “onCreate()”