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A Sample program is provided that creates a list of shapes stored in an array. This program uses classes: Shapes, Square, Rectangle and ShapesList. The main method is in the class: TestingShapesListClass. Conduct a careful examination of this code. Make sure you understand this code as it will help you with your own programming for this assignment. Using the uncommented sample code for classes: Shapes, Square, Rectangle and ShapesList provided, answer the following questions: 1. Draw a UML diagram of each of the Shapes, Rectangle and Square classes using the code that has been provided. Complete this using the examples that have been provide in the lecture slides. 2. Draw a UML diagram of the ShapesList class using the code that has been provided. Complete this using the examples that have been provide in the lecture slides. 3. Add appropriate comments, in your own words, into the file: ShapesList.java to explain all the methods. At a mimimum, explain the purpose of each method. For the more complex methods - reading input from a file, sorting the data and exporting data to the file - insert comments to explain the code. 4. Explain the line of code: output = new BufferedWriter(new FileWriter(file)) ; in the ExportToFile method in ShapesList.java . 5. Briefly explain the code in mySort() in the ShapesList class. What attribute are the shapes being sorted by? 6. Name the sort algorithm that is being used. Explain in words how it works, using an example. Why do we need to use two for loops? 7. Briefly name and describe one other sorting algorithm that could have been used. 8. Explain the use of the return value in the getArea() method in the Rectangle class. What is it returning? Where does the value come from? 9. Examine the lines to open the output file and write the outputString in the ShapesList class: File file = new File("export.txt"); System.out.println(file.getAbsolutePath()); output = new BufferedWriter(new FileWriter(file)); output.write(outputString); Where is the output file located? Find BufferedWriter in the Java API documentation and describe the use of this object. 10. Briefly explain why a try and catch clause has been included in the code to read from the file. Remove this from the code and remove the input file and take note of the error. Re-add the line and investigate what happens if the input file is not present.
Create a separate class, VectorTest, that will demonstrate the use of your Vector class. You must create at least two vectors, and demonstrate the use of each method. When you demonstrate the use of each method, print the results to the console ..
Write a static method named showTwos
Write a programme to create a webpage that prints the name of the STUDENT database in Wide Latin font and set the subtitle with description of the STUDENT to the screen. Set the page layout to the webpage.
You will be creating a grade book that will use arrays to store students and their grades. The breakdown of the project is as follows. You must be able to add a student, remove a student, edit a student, remove all students, and exit the program
Write a class Array that encapsulates an array and provides bounds-checked access. Create a recursive factorial program that prompts the user for an integer N and writes out a series of equations representing the calculation of N!.
A scuba diver uses a special equipment for diving. He has a cylinder with two containers: one with oxygen and the other with nitrogen. Depending on the time he wants to stay under water and the depth of diving the scuba diver needs various amount of ..
Explain where the following method invocations are most likely to be found in a program for dealing with census data organized using the Model, View, Controller (MVC) design pattern. Choices are zero or more of Model, View, and Controller. Be sure to..
write a java gui application called index.java that inputs several lines of text and a search character and uses string
For your Assignment 2 Part 1 submission you are required to produce a Java implementation of the GUI for the Agriculture image viewer component of your overall Agriculture File Storing and Management (FSM) System.
Write a calculator program for integer numbers in java. The calculator should be able to do addition, subtraction, multiplication, and division for integer numbers.
question define a java class named accumulator. the class contains the following elementsa. an integer variable named
Design, implement, test, and debug a program with a JFrame that allows the user to enter a series of contacts' names, ages, e-mail addresses, and cell phone numbers, and creates a file from the entered data
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