# Basic Java programming exercises

 Java Tutorial Java Exercises Data Structures

## Java program to find area of a rectangle

Write a Java program to input length and width of a rectangle and find area of the given rectangle. How to calculate area of a rectangle in Java programming. Logic to find area of a rectangle whose length and width are given in Java programming.

##### Required knowledge

Arithmetic operators, Data types, Basic input/output

##### Area of rectangle

Area of a rectangle is given by the formula -

Area=lw

Where l is length and w is width of the rectangle.

##### Logic to find area of rectangle

Below is the step by step descriptive logic to find area of rectangle -

1. Input length and width of rectangle. Store it in two different variables say length and width.

2. Apply formula to calculate rectangle area i.e. area = length * width.

3. Finally, print the value of area.

##### Program to find area of rectangle
```/**
* Java program to find area of rectangle
*/

import java.util.Scanner;

class Test
{
public static void main(String args[])
{
float length, width, area;
Scanner op=new Scanner(System.in);
/*
* Input length and width of rectangle
*/
System.out.print("Enter length of rectangle: ");
length=op.nextFloat();
System.out.print("Enter width of rectangle: ");
width=op.nextFloat();

/* Calculate area of rectangle */
area = length * width;

/* Print area of rectangle */
System.out.println("Area of rectangle = "+area+" sq. units ");
}
}
```

##### Output:

```Enter length of rectangle: 5
Enter width of rectangle: 3
Area of rectangle = 15.0 sq. units
``` 