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Analyzable Interface
Modify the CourseGrades class you created in
public interface Analyzable
{
double getAverage();
GradedActivity getHighest();
GradedActivity getLowestf();
}
The getAverage method should return the average of the numeric scores stored in the grades array. The getHighest method should return a reference to the element of the grades array that has the highest numeric score. The getLowest method should return a reference to the element of the grades array that has the lowest numeric score. Demonstrate the new methods in a complete program.
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Chapter 9 Solutions
Starting Out with Java: Early Objects (6th Edition)
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Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
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- Using java Hamburger ClassWrite a Hamburger class with the following six attributes:• bun - the type of bun the burger will be on• patties - the number of patties on the burger• cheese - whether or not the burger will have cheese• price - the price of the burger• toppings - an array of five toppings; it will need to start empty Write getters/setters for all attributesexcept the toppings array.Your constructor should create a single on white with no cheese and no toppings with a price of $2.99.Your class should include the following methods in this order, please: addCheese - this method has noparameters that adds cheese to the burger and increases the price by 75 centssuperSizeIt - this method has no parameters and adds a patty to the burger and increases the price by 1.50addToppings - this method would present the user with at least five toppings (your choice) stored in an array of Stringobjects. If the user indicates the wants the item, store the String in the toppings array. There…arrow_forward1. Square Roots Create a class with a method that, given an integer, returns an array of double-precision floating point numbers (known in Java as double), each of which is a square root of a number between 2 and the parameter to the method. For example, if the parameter is 5, the method should return an array of 4 doubles, with approximate values 1.4142135623, 1.7320508075, 2.0, and 2.2360679774. Your method should check the validity of the parameter, and take appropriate action if the parameter is invalid. 2. Reading Files Create a class with a method that, given a string representing a file name, returns an integer with the number of characters in the file. For example, if the file has 10 characters, your method must return the number 10. 3. Main Class Create a class HW1.java with a main method that does both of the following: calls the method from part 1 with a random integer between 0 and 10, and prints each of the numbers in the result. The numbers should all be printed on the…arrow_forwardTrue or false: All elements in an array of objects must use the same constructor.arrow_forward
- 17. Phone Book ArrayList Write a class named PhoneBookEntry that has fields for a person's name and phone number. The class should have a constructor and appropriate accessor and mutator methods. Then write a program that creates at least five PhoneBookEntry objects and stores them in an ArrayList. Use a loop to display the contents of each object in the ArrayList.arrow_forward11:02 all 10% + Create 1 1000.01 Create 2 2000.02 Create 3 3000.03 Deposit 111.11 Deposit 2 22.22 Withdraw 4 5000.00 Create 4 4000.04 Withdraw 1 0.10 Balance 2 Withdraw 2 0.20 Deposit 3 33.33 Withdraw 4 0.40 Bad Command 65 Balance 1 Balance 2 Balance 3 Balance 4arrow_forwardWrite code for PersonManagement class. This class contains the array of Person class (code is given below) and also following methods: set: This method receives the array of person class and set the attribute. displayAll: This method will display values of all persons. sort: This method will sort the array according to age values of the persons with ascending order using Selection Sort. reverse: This method will reverse the order of the array. getPersons: This method will return the array of the persons (attribute). displayEvenAgePerson: This method will display all those persons values who have even age. displayOddAgePerson: This method will display all those persons values who have odd age. displayPrimeAgePerson: This method will display only those persons values who have prime number age. Following is the class of Person: public class Person { private String Name; public int age; public void set(String Name, int age) { this.Name =…arrow_forward
- Write code for PersonManagement class. This class contains the array of Person class (code is given below) and also following methods: set: This method receives the array of person class and set the attribute. displayAll: This method will display values of all persons. sort: This method will sort the array according to age values of the persons with ascending order using Selection Sort. reverse: This method will reverse the order of the array. getPersons: This method will return the array of the persons (attribute). displayEvenAgePerson: This method will display all those persons values who have even age. displayOddAgePerson: This method will display all those persons values who have odd age. displayPrimeAgePerson: This method will display only those persons values who have prime number age.arrow_forwardCode a called method that takes two parameters, an array of double as reference type and a double value. In the method, manipulate the argument by incrementing the value of the array. Note that you are not required to manipulate the entire array.arrow_forwardCreate a class named "Hotel" (3 marks) - The class must have 4 attributes. (Choose any 4 attributes you want) - This class must have two constructors, Getter Methods, and Setter Methods. - toString() method should return the name of the hotel. In the main class that has the main method: - In the main method, Create 4 objects or more from the class Hotel and store them in a normal array. (3 mark) - Create an external method that takes the array as an argument. It will add all the elements of the normal array into an ArrayList. Then, call the method to test it and print all elements data from the ArrayListarrow_forward
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTMicrosoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
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