Java Language Aggregation

Instructions: Make a code Using Aggregation Following the Example below With the course, as the super class, Instructor and Textbook as the sub class. Make a code that showsVehicle as super class. and motercycle and bus as sub classes. attributes to get for car is company of car,model for car,color of car. The super class vehicle should say vehicle. Have Aggregated UML as well for all 3 classes. Need to have at least one method in every class. **Read What textbook says**

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8.7 Aggregation CONCEPT: Aggregation occurs when an instance of a class is a field in another class. In real life, objects are frequently made of other objects. A house, for example, is made of door objects, window objects, wall objects, and much more. It is the combination of all these objects that makes a house object When designing software, it sometimes makes sense to create an object from other objects For example, suppose you need an object to represent a course that you are taking in college. You decide to create a Course class, which will hold the following information: VideoNote Aggregation .The course name .The instructor's last name, first name, and office number The textbook's title, author, and publisher In addition to the course name, the class will hold items related to the instructor and the textbook. You could put fields for each of these items in the Course class. However, a good design principle is to separate related items into their own classes. In this example, an Instructor class could be created to hold the instructor-related data and a TextBook class could be created to hold the textbook-related data. Instances of these classes could then be used as fields in the Course class. Let's take a closer look at how this might be done. Figure 8-11 shows a UML diagram for the Instructor class. To keep things simple, the class has only the following methods: A constructor, which accepts arguments for the instructor's last name, first name, and office number A copy constructor . A set method, which can be used to set all of the class's fields A toString method Figure 8-11 UML diagram for the Instructor class Instructor - lastName : String -firstName String - officeNumber String + Instructor(Iname: String, fname: String office String) + Instructor(object2 : Instructor) + set (Iname : String, fname : String office : String): void + toString) : String