Example: Simple Interest Program in Java using Methods

import java.util.Scanner;

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public class Main {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);

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        System.out.println("Enter the principal (amount), time, and rate::\n");

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        float p = in.nextFloat(); // value of the principal

        float t = in.nextFloat(); // value of the time

        float r = in.nextFloat(); // value of the rate

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        CalculateSimpleInterest(p, t, r);

    }

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    // This method will calculate the simple interest

    public static void CalculateSimpleInterest(float x, float y, float z) {

        float SI; // Value of the simple interest

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        // It will calculate the simple interest

        SI = (x * y * z) / 100;

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        // It will produce the final output

        System.out.println("\nSimple Interest = " + SI);

    }

}