WriteindetailaboutOSstructure

java 1 eclips pls fix code for don't know where i made the miskate

DO NOT COPY Create a project in JAVA name "Supermarket Management System" Project should include: 1. Authentication or login using credentials with new user signup2. Loop3. Method4. Arrays 5. Encapsulation6. Inheritance 7. Polymorphism 8. Abstract class9. Interface10. File11. Exception 12. Mysql 13. Frontend, Backend14. JAVA GUI using Swing. (You should not use JavaFX.) NB: project should be created in eclipse

Objectives: Use Javadocs to document a class and methods Design and write a Java class Use fields (instance variables) Write multiple constructors Write accessor methods Write mutator methods Use the this keyword Use string concatenation Round floating point numbers (using Math.round()) Use a Scanner object Description ProduceItem class For this project, you get to design and write a ProduceItem class that stores a description, cost and weight as fields. Include both a constructor without any parameters and one with parameters for the description (String), cost (double) and weight (double) (in that order). For the constructor without parameters, set the description to an empty string, the cost to 0.0 and the weight to 0.0. Include appropriate accessor and mutator methods (and label them with comments including the terms "accessor" or "mutator"). So that the test cases compile, name the accessor methods: getDescription() getCost() getWeight() Additionally, name the mutator methods:…

python: class Student:def __init__(self, first, last, gpa):self.first = first # first nameself.last = last # last nameself.gpa = gpa # grade point average def get_gpa(self):return self.gpa def get_last(self):return self.last class Course:def __init__(self):self.roster = [] # list of Student objects def add_student(self, student):self.roster.append(student) def course_size(self):return len(self.roster) # Type your code here if __name__ == "__main__":course = Course()course.add_student(Student('Henry', 'Nguyen', 3.5))course.add_student(Student('Brenda', 'Stern', 2.0))course.add_student(Student('Lynda', 'Robison', 3.2))course.add_student(Student('Sonya', 'King', 3.9)) student = course.find_student_highest_gpa()print('Top student:', student.first, student.last, '( GPA:', student.gpa,')')

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Current file: Team.java Load default template... 1 public class Team { // TODO: Declare private fields - name, wins, losses 2 3 4 5 // TODO: Define mutator methods // setName(), setWins(), setLosses() 7 8 // TODO: Define accessor methods // 9. 10 getName(), getWins(), getLosses() 11 12 13 // TODO: Define getWinPercentage() 14 15 16 // TODO: Define printStanding()

InheritanceDemo.java:  // StudentName Today's Date public class InheritanceDemo {   public static void main(String[] args) { KleenexBox kb1 = new KleenexBox(); KleenexBox kb2 = new KleenexBox(100); Box justABox = new Box();   System.out.println("justABox has area " + BoxArea(justABox)); System.out.println("kb1 has area " + BoxArea(kb1)); System.out.println("kb2 has this many square inches of tissue: " + KleenexArea(kb2)); }   public static double BoxArea (Box b) { return b.width * b.length; }   public static double KleenexArea (KleenexBox a) { return a.width * a.length * a.numTissues; } }   Box.java:
// Student Name Today's Date   public class Box { public double width; public double length; public String label; } KleenexBox.java:
// Student's Name Today's Date
public class KleenexBox extends Box { public int numTissues;   // A new Kleenex box public KleenexBox() { numTissues = 50; length = 8.0; width = 5.0; }   // A new Kleenex box with a specific number of tissues public…

Can I pleae get help writing this in C++

SOLVE IN C#