Task 1Value: 10 marksFor this task you will create a class containing a number of static methods for processing an array of marks, which are scores in a test. Each mark is an integer in the range 0 to 100 inclusive. On the Interact site for this subject, you will be provided with a class Marks, which has a method getMarksthat returns an array of marks for you to use in testing.The class ProcessMarksthat you create will have the methods specified below. Most will accept an array of marks as an argument; one will accept an array of characters. The return type should be appropriate for the returned value.

• The max, minand rangemethods will return the maximum mark, the minimum mark and the difference between the maximum and minimum marks respectively.
• The meanmethods will return the mean of the set of marks.
• The medianmethod will return the median value of the set of marks. The median value is the middle one when the values are placed in order. To obtain an ordered version of the marks you may use an appropriate sortmethod of the Java API’s Arraysclass. Be careful not to destroy the original array of marks. If there is an even number of marks, the middle value is taken as the average of the two values that are nearest to the middle.
• The modemethod will return the mode of the set of marks, which is the most commonly occurring mark. To find the mode, use an ordered version of the set of marks, as used for finding the median. If there is more than one value that is most common, any one of the most common values will do for the mode.
• The gradesmethod will return an array of characters, which are the grades corresponding to the integer marks in the array of marks. The grades are to be assigned using the following lower boundaries for the corresponding marks: for grade A, the lower boundary is 90; for grade B, it is 75; for grade C, it is 60; for grade D, it is 50; for grade E, it is 45; and F is the grade for all other marks. A best solution for this method would not have the values for the lower boundaries hardcoded but would use an array for these values, which would allow the grade boundaries to be altered.
• The gradeDistnmethod will accept an array of characters, which are the grades assigned for the array of marks, such as returned by the gradesmethod. The gradeDistnmethod will return an array of integer values containing the distribution of grades, which is the number of occurrences of each grade in the assigned grades. The characters used for grades are fixed. The returned array should provide the distribution in order from grade A to grade F.

The following points should be taken into account in the design of your program:

• None of your code should change the contents of the original array of marks.
• You should not make any assumption that client code, that would use your methods, should call them in any particular order. That is, you should not assume that a client that calls the range method will have previously called the max and min methods.

Test your ProcessMarksclass, either by providing test code in a main method within that class or in a separate class. The test code will use an array of marks obtained from the getMarksmethod of the Marksclass provided on the Interact site. Test each one of the methods described above, displaying the results appropriately. The grades should be displayed 30 per line with a space separator between grades. The grade distribution should be displayed in the form:A: 10
B: 30
C: 105
D: 75
E: 35F: 10Task 2Value: 10 marksFor this task you have to define a class Circle2Dto represent a circle with a point in two dimensions labeled xand y and a radius. To test Circle2Dclass you also need to define a test class. The Circle2Dclass has the following state and functionality:

• Two double data fields named x and y that specify the centre of the circle with getter methods.
• A data field radius with a getter method
• A no-arg constructor that creates a default circle with (0, 0) for (x, y) and 3 for radius.
• A constructor that constructs a circle with the specified x, y, and radius.
• A method getArea() that returns the area of the circle
• A method getPerimeter() that returns the perimeter of the circle
• A method contains(double x, double y) that returns true if the specified point (x, y) is inside this circle
• A method overlaps(Circle2D circle) that returns true if the specified circle overlaps with this circle.

Draw the UML diagram for the class and then implement the class. Write a test class program that creates a Circle2D object c1(new Circle2D(2, 2, 2.5)), display its areas and perimeter, and display the result of c1.contain(3,3), c1.containes(new Circle2D(4, 5, 8.5)), and c1.overlaps(new Circle2D(3, 5, 0.3)).RationaleThis assignment has been designed to allow students to test and demonstrate their ability to:

• to interpret design requirements expressed in Unified Modelling Language;use method abstraction in program design (objective 2);
• to use object-oriented techniques and Java resources to develop small applications consisting of a number of classes (objective 5);
• be able to apply basic testing and debugging techniques in program development (objective 6);
• be able to implement basic algorithms in Java (objective 1);

Marking criteriaThese criteria will be used to evaluate Assignment 2:

• The tasks are performed as specified and the assignment is submitted as required
• Appropriate understanding of the subject area is demonstrated, including correct use of appropriate techniques
• Explanations and discussions are cogent and use clear and correct English expression
• Referencing is used where appropriate

Marking guide specific to tasks:

Assessment 2 (Total marks 20)
Task 1 (total marks 10)
Criteria	Marks	Pass		CR	DI	HD
a. Execution: Program launches, executes and terminates without crashing; program executes as specified.	1.0	Provide java files. They execute without crashing towards intended output (1.0)
b. Program design & implementation:Classes with the functions: max, min and range methods (2); mean, median, and mode methods (2); grades and gradeDistn methods (2); which show good design and logic (1).	7.0	Implement ProcessMarks class with some functions and then combine it with Marks class for testing (3.5)		Implement ProcessMarksclass with majority of the functions and integrate the mark class with it for testing (4 - 6)	Implement and integrate classes with all functions by maintaining logical flow (7)
c. Presentation:Code uses good style (indentation, comments)	0.5	Few comments and minor indentation errors (0.25)		Proper indentation and comments in each block and major lines (0.5)
d. Submission: the documents with all components (analysis, testing, and output)	1.5	Provide sample output (0.75)		Provide all components within the specified word length(1.5)
Task 2 (total marks 10)
Criteria	Marks		Pass	CR	DI	HD
a. Execution: Program launches, executes and terminates without crashing; program executes as specified.	1.0		Provide java files. They execute without crashing towards intended output (1.0)
b. Program design & implementation:Circle2D (3.0) and TestProgram (3.0) classes are implemented as specified, showing good logic.	6.0		Implement Circle2Dand TestProgramclasses with some functions and combine them for testing (3)	Implement and integrate the Circle2D andTestProgram classes with majority of the functions for testing (4)	Implement and integrate theCircle2D andTestProgramclasses with all functions with minor error (5)	Implement and integrate theCircle2D andTestProgramclasses with all functions perfectly by maintaining logical flow (6)
c. UML design: For classCircle2D.	1.5		UML with all components (0.75)	UML with all components and their modifier, argument, and return type with minor error (1.0)		UML with all components and their modifier, argument, and return type (1.5)
d. Presentation:Code uses good style (indentation, comments)	0.5		Few comments and minor indentation errors (0.25)	Proper indentation and comments in each block and major lines (0.5)
e. Submission: The document with all components	1.0		Provide sample output (0.5)	Provide all components within the specified word length with good explanation (1.0)

PresentationMaterial to submit for Task 1

1. You need to submit the java and class files
2. You also need to submit a doc/pdf file with the following information:

• Analysis: Describe the problem including input and output in your own words (not more than 250 words)
• Testing: Describe how you test this program (not more than 250 words)
• Output: Copy and paste a snapshot of the program output

Material to submit for Task 2

1. You need to submit the java and class files
2. You also need to submit a doc/pdf file with following information:

• Analysis: Describe the problem including input and output in your own words (not more than 400 words)
• Testing: Describe how you test this program (not more than 400 words)
• Output: Copy and paste a snapshot of the program output
• UML design

RequirementsTo complete this assessment you might need to have covered material up to and including the topic Objects and Classes, Thinking in Objects, and Arrays in theText Book and Module.Online submission via Turnitin is required for this assignment. Details will be provided by your subject lecturer.