Compute future investment value at a given interest rate for a specified number of years

This Java program calculates the future value of an investment based on the investment amount, rate of interest, and number of years using the formula FV = PV * (1 + r)^n, where FV is the future value, PV is the present value (investment amount), r is the monthly interest rate, and n is the number of months. Here's how the program works:

The program starts by prompting the user to enter the investment amount, rate of interest, and number of years using the Scanner class.
The program calculates the monthly interest rate by multiplying the annual rate by 0.01 and dividing it by 12.
The program then uses a for loop to iterate through each year and calculates the future value of the investment using the future_Value function, which takes in the investment amount, monthly interest rate, and number of years as parameters.
Inside the loop, the program uses System.out.printf to print the year and the corresponding future value with a formatted width of 19 if the year is less than 10, or 18 if the year is 10 or greater.
Finally, the future_Value function returns the calculated future value to the main program.

Source Code

import java.util.Scanner;
public class Future_Investmen
{ 
	public static void main(String[] args)
	{
		Scanner in = new Scanner(System.in); 
		System.out.print("Enter the Investment Amount : ");
		double inves = in.nextDouble();
		System.out.print("Enter the Rate of Interest : ");
		double rate = in.nextDouble();
		System.out.print("Enter Number of Years: ");
		int year = in.nextInt();
 
		rate *= 0.01;
 
		System.out.println("\nYears      FutureValue");
		System.out.println("-----------------------");
		for(int i = 1; i <= year; i++)
		{
		int format = 19;
			if (i >= 10)
				format = 18;
			System.out.printf(i + "%"+format+".2f\n", future_Value(inves, rate/12, i));
		}
	 }
 
	public static double future_Value(double inves_amt, double mon_inv_rate, int years)
	{
		return inves_amt * Math.pow(1 + mon_inv_rate, years * 12);
	}
}

Output

Enter the Investment Amount : 8500
Enter the Rate of Interest : 56
Enter Number of Years: 6

Years      FutureValue
-----------------------
1           14693.31
2           25399.22
3           43905.72
4           75896.51
5          131196.58
6          226789.66

Compute future investment value at a given interest rate for a specified number of years

Source Code

Output

Example Programs

Math Programs in Java