Object:
A variable or any element is considered as an object when it has states and behaviors. It is the commodity or entity which is created to perform the tasks according to the plan.
Class:
In simple words class can be defined as the template or blueprint that describes the state or behavior of the object. Class is also defined as the idea or plan or structure of a real-world entity.
Relationship between a class and object:
- Class defines the properties or methods of the objects which is represented by abstraction.
- An object exhibits the methods and properties defined by the class.
- Therefore, object is known as instance of class.
Explanation of Solution
b) Fields:
In the given UML diagram, th...
Explanation of Solution
c) Methods:
In the given UML diagram, the methods are “setMake())&#x...
Explanation of Solution
d) Private members:
In the given UML diagram, the private members are the fields &...
Explanation of Solution
e) Public members:
In the given UML diagram, the public members are the methods “...
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Starting Out with Java: Early Objects (6th Edition)
- 3) Design the classes based on the UML diagram given below. You must pay attention to the classes and their relationship as well as the variables and the methods in the classes. You can set an initial position for the shape on the coordinate plane (e.g. 50,50 for x and y respectively), your move() method should modify the position, your area() method should calculate the area for the for the calling class, and your resize() method should modify the lengths, radius and the points(for the triangle) of the caller class. You can put your own values for the initialization. Shape position: int move) resize() area() Rectangle width: int height: int area() Circle Triangle points: List area( radius: float area( Square width: int area()arrow_forwardCreate your own UML diagram — similar to the above UML diagram — for a Pet class that meets thespecification below.1. Create the fields indicated below. Use these names exactly as given for your fields. Define them inexactly this order.• name — The name of the pet, e.g., “Rufus”, “Mittens”, “Smelly”, etc.• animal — The type of pet, e.g., “dog”, “cat”, “asparagus”, etc.• age — The (integer) number of years the pet has been alive, e.g., 1, 2, 3, etc.2. Create a mutator for each of the above in the order listed. Use the standard Java naming conventionfor mutators.3. Create an accessor for each of the above in the order listed. Use the standard Java naming conventionfor accessors.Example: Suppose you are taking the question for the example Car UML above instead of your Pet UML.Don’t enter any spaces at all.When the question asks: Enter line 1:You would enter: CarWhen the question asks: Enter line 2:You would enter: -make:StringWhen the question asks: Enter line 3:You would enter:…arrow_forwardA Person class has four attributes SSN, age, gender, and address. Normally, SSN and gender are not expected to be changed after the values are set for a person object. Show the UML class diagram for this Person class.arrow_forward
- The technique of packaging an objects attributes into a cohesive unit that can be used as an undivided entity is ____________. a. inheritance b. encapsulation c. polymorphism d. interfacingarrow_forwardDraw a simple UML class diagram for the following system: “A library has sections which store books and users who borrow them.” You should draw the four classes and their relationships only. Justify the relationships brieflyarrow_forwardQuestion 23 To show inheritance in a UML class diagram you would use a solid line with a fat-headed arrow. The line should be attached to the child class and the arrow should be attached to the parent class. True Falsearrow_forward
- Create your own UML diagram — similar to the below UML diagram — for a Pet class that meets thespecification below.1. Create the fields indicated below. Use these names exactly as given for your fields. Define them inexactly this order.• name — The name of the pet, e.g., “Rufus”, “Mittens”, “Smelly”, etc.• animal — The type of pet, e.g., “dog”, “cat”, “asparagus”, etc.• age — The (integer) number of years the pet has been alive, e.g., 1, 2, 3, etc.2. Create a mutator for each of the above in the order listed. Use the standard Java naming conventionfor mutators.3. Create an accessor for each of the above in the order listed. Use the standard Java naming conventionfor accessorsarrow_forwardA Person class has four attributes SSN, age, gender, and address. Normally, SSN and gender are not expected to be changed after the values are set for a person object. What design pattern can make this feasible? Also, Show the UML class diagram for this Person class.arrow_forwardHow can class fields be protected against unintended alteration is the question.arrow_forward
- Task 4 Develop a class diagram for following description: Develop a class diagram for following description: The telephone agent uses an order registry and customer catalog to obtain access to an order & a customer respectively. The order registry uses an order number as a qualifier to select particular order instance. A customer catalog uses customer name and phone number as a qualifier to select particular customer. The attributes of an order are the order numbers and time when it is placed. The order consists of many items. An item has item_number, a quantity, unit price. It also has reference to catalog item which represents listing. When an order is cancelled or corrmitted, it cancels or commits each of its items first. When an order's total price method is invoked, the order calls the total price method of each of items and returns the sum.arrow_forwardWith the aid of examples, demonstrate what you understand about a class and its instances.arrow_forwardIn your own words describe the elements found on a UML class diagram and what they represent in your own words.arrow_forward
- C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology PtrMicrosoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,