"Program for Calculating Rectangle's Area and Perimeter using Classes"
In this article, we will explore how to create a Java program that calculates the area and perimeter of a rectangle.
To achieve this, we first define a class with private variables for the length and width of the rectangle. A constructor is then used to initialize these variables. Next, we create methods to calculate the area (length multiplied by width) and perimeter (2 times the sum of length and width).
Here is a simple example:
```java public class Rectangle { private double length; private double width;
} ```
In this code, and are private fields. The constructor assigns values to these fields. The method returns the product of length and width, while the method returns twice the sum of length and width. The method demonstrates creating an object and printing the results.
The area of a rectangle is the measurement of its surface, while the perimeter is the sum of the lengths of all four sides, which in this case is 2 times the sum of length and width.
If you want the program to accept user input, you can extend this by using to read values from the console before creating the object. This structure cleanly encapsulates data and behavior related to a rectangle in Java.
In the given code, and are private fields that represent the dimensions of a rectangle. To make the program more interactive, we can use class for user input, reading values from the console before creating the object, thereby making it adaptable to different rectangles. Moreover, to broaden the application of this Java program, we might consider developing a data structure that includes various shapes, allowing the user to calculate the area and perimeter of different geometrical figures using and .
