Java: Print the area and perimeter of a rectangle
Java Basic: Exercise-13 with Solution
Write a Java program to print the area and perimeter of a rectangle.
Java: Perimeter of a rectangle
A perimeter is a path that surrounds a two-dimensional shape. The word comes from the Greek peri (around) and meter (measure). The perimeter can be used to calculate the length of fence required to surround a yard or garden. Following image represents the perimeter of a rectangle.
Java: Area of a rectangle
In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. To find the area of a rectangle, multiply the length by the width.
A rectangle with four sides of equal length is a square.
Following image represents the area of a rectangle.
Pictorial Presentation:

Sample Solution:
Java Code:
public class Exercise13 {
public static void main(String[] strings) {
final double width = 5.6;
final double height = 8.5;
double perimeter = 2*(height + width);
double area = width * height;
System.out.printf("Perimeter is 2*(%.1f + %.1f) = %.2f \n", height, width, perimeter);
System.out.printf("Area is %.1f * %.1f = %.2f \n", width, height, area);
}
}
Explanation:
In the exercise above -
- Define constant values for the rectangle's width (5.6) and height (8.5).
- Calculate the rectangle perimeter using the formula: 2 * (height + width).
- Calculate the rectangle area using the formula: width * height.
- Prints the perimeter and area values to the console using printf statements with formatted output to display the results with specific decimal precision.
Sample Output:
Perimeter is 2*(8.5 + 5.6) = 28.20 Area is 5.6 * 8.5 = 47.60
Flowchart:

Java Code Editor:
Previous: Write a Java program that takes five numbers as input to calculate and print the average of the numbers.
Next: Write a Java program to print an American flag on the screen.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
Java: Tips of the Day
DropElements
Removes elements in an array until the passed function returns true. Returns the remaining elements in the array.
Loop through the array, using Arrays.copyOfRange() to drop the first element of the array until the returned value from the function is true. Returns the remaining elements.
public static int[] dropElements(int[] elements, IntPredicate condition) { while (elements.length > 0 && !condition.test(elements[0])) { elements = Arrays.copyOfRange(elements, 1, elements.length); } return elements; }
Ref: https://bit.ly/37YWqzD
- Weekly Trends
- Python Interview Questions and Answers: Comprehensive Guide
- Scala Exercises, Practice, Solution
- Kotlin Exercises practice with solution
- MongoDB Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - JOINS
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join
We are closing our Disqus commenting system for some maintenanace issues. You may write to us at reach[at]yahoo[dot]com or visit us at Facebook