# Java Programming : Simple Interest

#### Example

```plaintext
Input 
enter the principal 1200 
enter the rate 5 
enter the time 2 
Output
The simple interest is 120.0
```

#### **Required to know**

Use of **Variables**, Use of different operators like **assignment or arithmetic operators**, Use of functions like **System. out.print(),** **and** Use of **Data types.**

#### Formula

```plaintext
Simple interest = (principal * rate * timne) / 100
```

#### Steps

* Take principal, rate and time as input from the user.
    
* Use the formula to find the simple interest.
    
* Print the value after calculating the simple interest.
    

#### Program

```java
import java.util.Scanner;

public class simple {

    /**
     * This class calculates the simple interest.
     */

    public static void main(String[] args) {

        // Create a Scanner object to read user input.
        Scanner sc = new Scanner(System.in);

        // Prompt the user to enter the principal, rate and time.
        System.out.print("Enter the principal: ");
        double principal = sc.nextDouble();
        System.out.print("Enter the rate of interest: ");
        double rate = sc.nextDouble();
        System.out.print("Enter the time period: ");
        double time = sc.nextDouble();

        // Calculate the simple interest.
        double si = (principal * rate * time) / 100;

        // Print the simple interest.
        System.out.println("The simple interest is " + si);
    }
}
```