CSE Spring 2015 Homework #1 Assigned January 22 nd, 2015, 2:00 pm Due: February 5 th, 2015, 2:00 pm

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1 CSE Spring 2015 Homework #1 Assigned January 22 nd, 2015, 2:00 pm Due: February 5 th, 2015, 2:00 pm This file is a homework assignment for a college course that includes individual work. If this file should submitted to a newsgroup or answer page, please contact me at becker@uta.edu. Thank you. Introduction For this assignment, you will be creating a small text program in order to begin your education in Object-Oriented Programming and Java. Object-oriented programming is about how to relate computer code to items in the real world. The real world gives us literally millions of different examples and ideas to choose from, anything from nightmare monsters to buried treasure to asteroids. For this assignment, the topic will be cargo ships and docks. You will have to create a basic set of classes, the menus to create them, and complete a few mathematical problems. Objectives By the time you complete this assignment, you should be familiar with: Primitive Data Types Control, Branching and Logic Repetition and looping Creating a Java Class Creating a Constructor Beginning Input and Output Mathematical and Logical Operators

2 Requirements to turn in assignment Netbeans has an export project to a zip file ability. When turning in the assignment, please zip the entire project and upload to Blackboard, or other instructions as needed. Be sure to complete the first menu task, for this is where your name is on your program. Required Comments: At the beginning of each file, you should ensure your name and student id number appear at the top of the file. At the beginning of each class, you should write a short description of the class At the beginning of each function, you should write a short description, and include the parameters and returns of the function. If there are no parameters or returns, leave that part blank. Good Naming Standards Writers of Java code have established some simple standards for how a program should be written, addressing both the functionality and the readability of the code. You can find several standards online by simply searching for Java coding standards, including ones by Oracle and Google. Additionally many corporations who use Java have established their own, slightly modified, set of coding standards. 1. Variable names will be written in camel case ( mapdata or mainmapmenu). This includes both the member variables of your classes and the internal variables used by a method, such as the parameters. 2. Class names will be written with the first letter of each word capitalized ( MainMenu, MapNode). 3. Class and variable names will be in plain language and will not be abbreviated ( instead of calling an instance of MainMenu simply mm you would call it mainmenu). 4. Any member variables of a class will be set as "private" variables. In order to access those variables getter and setter methods will be created. public class MapData { private MapNode mapnode; } public MapNode getmapnode() { return mapnode; } public MapNode setmapnode(mapnode newmapnode) { this.mapnode = newmapnode; }

3 Description Cargo comes to and from a seaport loaded onto ships. Each ship can contain a tonnage of cargo. The ships exist somewhere on a map at a point of longitude and latitude. Ships sail into the seaport, and the seaport will have one or more docks. Each dock has a certain size to be able to handle the different sizes of ships, and also exist on the map. When the ship of the correct size is in a dock of the correct size, the cargo can be loaded and off-loaded. If two ships occupy the same coordinate, they have collided. If a ship that is too big is in a dock that is too small, then that ship has been grounded. If a ship has more cargo than it has tonnage, then it will be declared unsafe. Instructions In order to complete this assignment, three key issues must be done. First, you must create an abstract top-level diagram of the description. Second, you must create the object-oriented classes. Third, you must create a menu system that manipulates these classes. Part 1. Top-Level Abstract Diagram A key skill that is often missing in computer studies is the ability to think abstractly. Many technical systems exist, where the fine detail has a set of rules and routines and have a known standard. When a computer programmer tries to explain this diagram to someone without the same technical skill, it causes confusion. A top-level diagram only outlines the large pieces of a system, and how they are connected, without going into deep detail of the components. For the description above, you are to create a top-level abstract diagram that will include the port, the docks, the ships, and the cargo.

4 Part 2. Creating Classes Use a Java system, ideally NetBeans, to create the following classes for use in your program. Class Main: A class that will be where your program begins. This class will include the public static void main (String args[]) method that will be the beginning of the program. Each of the other tasks (Describe below) will be methods of this class. These will be discussed in Part 3. Class Cargo: The class Cargo will represent a volume and weight of material each ship can contain. In this exercise, the cargo will have a weight and a label. These properties are part of cargo. Weight, in tonnage, as a double A description, as a String In addition, the class Cargo will have the following methods. The class will have a constructor, which will set the default values of the ship properties to: The constructor will set the volume to 10 tons The constructor will set the description to Bananas For each of the properties, will a have a get method that will return the current value For each of the properties, will a have a set method that will set the current value. The Cargo class will also have a display method, which will print out the current information about the cargo 10 tons of bananas

5 Class Ship: A class that will represent a cargo carrying vessel. This class will have the following properties: Name of Ship, as a String Country of Registration, as a String Transponder Number, as a long Cargo Capacity as a double, in tonnage Length of the ship, as a double, in metres Beam (width) of the ship, in metres Draft (depth) of the ship, in metres Longitude as a double, in degrees Latitude as a double, in degrees A variable of the Cargo class. In addition, the class will have the following methods. The class will have a constructor, which will set the default values of the ship properties to: The name of the ship to "Zenda" The country of origin to "Ruritania" The Transponder code will be set to 0. The cargo Capacity will be set to 10 tons. The length of the ship will be set to 90 metres The beam (width) of the ship will be set to 10 metres The draft (Depth in the water) will be set to 5 metres The longitude will be set to The latitude will be set to The cargo of 10 tons of bananas. For each of the properties, will a have a get method that will return the current value. For each of the properties, will a have a set method that will set the current value. The class will also have a display method, which will print out the current information about the ship: This method should call the display method of the cargo. Name: Zenda Country of Origin: Ruritania Transponder: 0 Length: 90 metres Beam: 10 metres Draft: 5 metres Capactiy:10 tons Location ( , ) Cargo: 10 tons of bananas

6 Class Dock: The class Dock will represent an area where a ship can be moored, so cargo can be loaded and unloaded. To this end, the Dock has to have the following properties. The number of the dock, as an integer The depth of the dock, a double, in metres The length of the dock, a double, in metres The width of the dock, a double, in metres Longitude as a double, in degrees Latitude as a double, in degrees In addition, the class Dock will have the following methods. The class will have a constructor, which will set the default values of the ship properties to: The constructor will set the number of the dock to 100 The depth of the dock set to 15 metres The length of the dock set to 100 metres The width of the dock to 6 metres The longitude will be set to The latitude will be set to For each of the properties, will a have a get method that will return the current value For each of the properties, will a have a set method that will set the current value. The Dock class will also have a display method, which will print out the current information about the dock: Dock Number: 1 Size: 100x15x6 metres Location ( , )

7 The Menu Functions Now the classes have been defined, it is time to define what the systems should do with these classes. Main Menu Show Student ID 2. Ship Menu 3. Dock Menu 4. Display Report 5. Quit Function 1: Show Student ID Show your name, ID Number, and CSE , and the date. The first item on the menu will be to display your name and student information. Name: Anthony Hope ID: CSE February 5, 2015

8 Function 2: Ship Menu Add class Ship as a property to your Main class. Have your second menu item open up a ship editing tool as a second menu. Ship Menu Allocate Memory for Ship 2. Update Ship 3. Set Ship to Null 4. Display the Ship 5. Previous Menu In the Update Ship, have a further menu that allows you to change each property listed in Part 2. Remember to include the display. Ship Properties Menu Update Name 2. Update Registration 3. Update Transponder 4. Update Capacity 5. Update Length 6. Update Beam 7. Update Draft 8. Update Longitude and Latitude 9. Update Cargo 10. Display the Ship 11. Previous Menu

9 When Update Cargo is selected, yet another submenu will be shown. Cargo Properties Menu Update Description 2. Update Weight 3. Display Cargo 4. Previous Menu Function 3: The Dock Menu Each of the dock properties must be addressed. Dock Menu Allocate Memory for Dock 2. Update Dock 3. Set Dock to Null 4. Display the Dock 5. Previous Menu And for updating the dock, will be each of the properties. Remember to include the display Dock Properties Menu Set the number 2. Set the length 3. Set the width 4. Set the depth 5. Set longitude and latitude 6. Display the Dock 7. Previous Menu Function 4: Status Report Display the status of the cargo, the ship, and the dock all in one report. This includes comparing the location and sizes of the various values. For the ship to be in the dock, the longitude and latitude must match. If the cargo is greater than the capacity, the report will say the ship is unsafe. If the ship is larger than the dock, and is in the dock, the report will say the ship is grounded. If the ship is not in the dock, then the ship is at sea. If the ship is safely in the dock, then the ship should be ready for offloading