
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Java
class Main {
publicstaticvoid main(String[] args) {
/*
* Use this code to test your Hexagon class.
* Uncomment the items as you complete parts of the Hexagon class.
*/
Hexagon myHex = new Hexagon();
// Hexagon myOtherHex = new Hexagon(5);
// // print info about myHex
// System.out.println("Information about myHex");
// displayHex(myHex);
// System.out.println();
// // print info about myOtherHex
// System.out.println("Information about myOtherHex");
// displayHex(myOtherHex);
// System.out.println();
// myHex.setSide(3);
// // print info about myHex after changing side length
// System.out.println("Information about myHex with side length 3");
// displayHex(myHex);
}
publicstaticvoid displayHex(Hexagon h) {
// System.out.println("Side length: " + h.getSide());
// System.out.println("Perimeter: " + h.getPerimeter());
// System.out.println("Diagonal length: " + h.getDiagonalLength());
// System.out.println("Surface area: " + h.getArea());
}
}

Transcribed Image Text:### A Hexagon
The image shows a hexagon inscribed in a circle. The hexagon's interior angles are 120°, and it is divided into six equilateral triangles. Each triangle has angles of 60°.
### Steps
1. **Add a field to the Hexagon.java class called `side`.**
- It should be a double.
2. **Write a no arguments constructor.**
- Set `side = 0.0`.
3. **Write a constructor that accepts a double parameter.**
- Set `side` equal to the value passed in.
4. **Write accessor/mutator methods for the field `side`.**
5. **Write a method (`getPerimeter()`) that returns a double and calculates the perimeter of the Hexagon.**
- The formula for this is: `perimeter = side * 6`
6. **Write a method (`getDiagonalLength()`) that returns a double that is the distance from one 'corner' to its opposite 'corner'.**
- The formula for this is: `diagonalLength = side * 2`
7. **Write a method (`getArea()`) which returns a double containing the surface area of the hexagon.**
- The formula for this is: `(3/2 * sqrt(3) * side ^ 2)`. Take care with integer division here.

Transcribed Image Text:## Results
When complete, running the test code should generate the following output:
### Information about myHex
- **Side length:** 0.0
- **Perimeter:** 0.0
- **Diagonal length:** 0.0
- **Surface area:** 0.0
### Information about myOtherHex
- **Side length:** 5.0
- **Perimeter:** 30.0
- **Diagonal length:** 10.0
- **Surface area:** 64.9519052838329
### Information about myHex with side length 3
- **Side length:** 3.0
- **Perimeter:** 18.0
- **Diagonal length:** 6.0
- **Surface area:** 23.382685902179844
This text output provides detailed information about hexagonal dimensions, including side length, perimeter, diagonal length, and surface area for different hexagonal shapes.
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