Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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I need help writing this code

## Java Bug Class Exercise

### Introduction
In this exercise, you will write a complete Java code for a class named `Bug` that models a bug moving along a horizontal line. The bug can only move right or left along the x-axis.

### Requirements
- **Initial direction**: The bug initially faces right.
- **Direction change**: The bug can turn to change its direction. For instance, if the bug is facing right, and then receives a turn command, the bug will now be facing left.
- **Movement**: Each move changes the bug's position by one unit in the current direction.

### Class Details
The `Bug` class requires instance variables to store:
1. The **current position** of the bug.
2. The **current direction** it is facing.

### Tasks
1. Declare and define a **constructor** that accepts an initial position and initializes both instance variables.
2. Define the following methods:
   - `turn()`: Changes the bug's direction.
   - `move()`: Moves the bug one unit in the current direction.
   - `getPosition()`: Returns the current position of the bug.

### Example
The following code snippet demonstrates the usage of the `Bug` class within a `BugTester` class. You only need to implement the `Bug` class as described.

```java
Bug bugsy = new Bug(10); // Creates new bug at position 10, facing right
bugsy.move();            // Now the position is 11
bugsy.turn();            // Now facing left
bugsy.move();            // Now the position is 10
```

### Explanation
- **Bug instantiation**: A new `Bug` is created at position 10, facing right.
- **Move**: The bug moves right, changing its position to 11.
- **Turn**: The bug turns to face left.
- **Move again**: The bug moves left, changing its position back to 10.

This exercise helps practice basic object-oriented programming by implementing a simple class with specified behaviors and methods.
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Transcribed Image Text:## Java Bug Class Exercise ### Introduction In this exercise, you will write a complete Java code for a class named `Bug` that models a bug moving along a horizontal line. The bug can only move right or left along the x-axis. ### Requirements - **Initial direction**: The bug initially faces right. - **Direction change**: The bug can turn to change its direction. For instance, if the bug is facing right, and then receives a turn command, the bug will now be facing left. - **Movement**: Each move changes the bug's position by one unit in the current direction. ### Class Details The `Bug` class requires instance variables to store: 1. The **current position** of the bug. 2. The **current direction** it is facing. ### Tasks 1. Declare and define a **constructor** that accepts an initial position and initializes both instance variables. 2. Define the following methods: - `turn()`: Changes the bug's direction. - `move()`: Moves the bug one unit in the current direction. - `getPosition()`: Returns the current position of the bug. ### Example The following code snippet demonstrates the usage of the `Bug` class within a `BugTester` class. You only need to implement the `Bug` class as described. ```java Bug bugsy = new Bug(10); // Creates new bug at position 10, facing right bugsy.move(); // Now the position is 11 bugsy.turn(); // Now facing left bugsy.move(); // Now the position is 10 ``` ### Explanation - **Bug instantiation**: A new `Bug` is created at position 10, facing right. - **Move**: The bug moves right, changing its position to 11. - **Turn**: The bug turns to face left. - **Move again**: The bug moves left, changing its position back to 10. This exercise helps practice basic object-oriented programming by implementing a simple class with specified behaviors and methods.
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