Write the Bicyle class which extends Vehicle. The UML diagram is shown below. Follow it exactly. Vehicle Clees Felds owner string wheels int Methods • petwheels)int • toring)string • vehidetstring owner, int wheels) Bkycle Ches Felds gears int model string Methods • Boydestring e, int w, string mod, t gear) • ortGeartatio0 int • teing): string • The Bicycle constructor call the superclass constructor to initialize owner and wheels getGearRatio(0 returns the product of gears and wheels. (Stupid, I know.) • Override the toString) method and return the information in this form, all on one line: Bicycle(model="Trek T700", gears-21) extends Vehicle(owner="V. Nibali", wheels=2)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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**Problem Statement**

**Inheritance**

Write the **Bicycle** class which extends **Vehicle**. The UML diagram is shown below. **Follow it exactly.**

---

### UML Diagrams Explanation

#### Vehicle Class Diagram
- **Fields:**
  - `owner` : string
  - `wheels` : int
- **Methods:**
  - `getWheels()` : int
  - `toString()` : string
  - `Vehicle(string owner, int wheels)`

#### Bicycle Class Diagram
- **Fields:**
  - `gears` : int
  - `model` : string
- **Methods:**
  - `Bicycle(string o, int w, string mod, int gear)`
  - `getGearRatio()` : int
  - `toString()` : string

---

### Implementation Requirements
- The **Bicycle** constructor must call the superclass constructor to initialize `owner` and `wheels`.
- `getGearRatio()` returns the product of `gears` and `wheels`.
- Override the `toString()` method and return the information in this form, all on one line:
  - `Bicycle(model="Trek T700", gears=21) extends Vehicle(owner="V. Nibali", wheels=2)`
Transcribed Image Text:**Problem Statement** **Inheritance** Write the **Bicycle** class which extends **Vehicle**. The UML diagram is shown below. **Follow it exactly.** --- ### UML Diagrams Explanation #### Vehicle Class Diagram - **Fields:** - `owner` : string - `wheels` : int - **Methods:** - `getWheels()` : int - `toString()` : string - `Vehicle(string owner, int wheels)` #### Bicycle Class Diagram - **Fields:** - `gears` : int - `model` : string - **Methods:** - `Bicycle(string o, int w, string mod, int gear)` - `getGearRatio()` : int - `toString()` : string --- ### Implementation Requirements - The **Bicycle** constructor must call the superclass constructor to initialize `owner` and `wheels`. - `getGearRatio()` returns the product of `gears` and `wheels`. - Override the `toString()` method and return the information in this form, all on one line: - `Bicycle(model="Trek T700", gears=21) extends Vehicle(owner="V. Nibali", wheels=2)`
- Read a UML diagram to determine the new methods and/or instance variables.
- Define instance variables, accessors, and mutators.
- Define a constructor to initialize those variables.
- Define constructors for your subclasses and call the superclass constructor.
- Override superclass methods by combining and extending their behavior.
- Override the **toString** method in a subclass.

**Note:** There is no printing, and you will not need Scanners, or do any input.
Transcribed Image Text:- Read a UML diagram to determine the new methods and/or instance variables. - Define instance variables, accessors, and mutators. - Define a constructor to initialize those variables. - Define constructors for your subclasses and call the superclass constructor. - Override superclass methods by combining and extending their behavior. - Override the **toString** method in a subclass. **Note:** There is no printing, and you will not need Scanners, or do any input.
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