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Write a program in JAVA that performs several steps to obtain a loan, as follows:
A. Introduction of loan value, interest and repayment months
B. Calculation of interest in one month
C. Calculation of payment in one month
The above calculation operations should be performed with functions that do not return a value (void).

What I have tried:

package Algorithms;
import java.util.Scanner;

public class exercise {
    public static void InterestMonthly (double n) {
        double AnnualInterest = 0;
        AnnualInterest / = 100.0;
        double MonthlyInterest = AnnualInterest / 12;

    public static void KestiMujor (double n) {
        double Principal = 0, MonthlyInstallment = 0, MonthlyInterest = 0, NumberofMonths = 0;
        double MonthlyInstallment = Principal * MonthlyInterest / (1 - Math.pow (1 + MonthlyInterest, 

    public static void main (String [] args) {
        Scanner input = new Scanner (;
        System.out.print ("Annual loan interest rate (in%):");
        double InterestAnnual = input.nextDouble ();
        System.out.println ("");
        System.out.print ("Loan maturity period (NumberofMonths):");
        int NumberofMonths = input.nextInt ();
        System.out.println ("");
        System.out.print ("Credit Principal: All");
        double Principal = input.nextDouble ();
        System.out.println ("");
        double n;
        System.out.println ("Monthly Credit Installment is Euro" + MonthlyInstallment);
        System.out.println ("Monthly loan interest in% is:" + MonthlyInterest (n) * 100.0 + "%");
        System.out.println ("Monthly cash loan interest is:" + MonthlyInterest (n) * 
                MonthlyInstallment + "Euro");
Updated 27-May-22 8:05am
Xxx Yyy 2022 27-May-22 10:49am    
Please sm help ASAP
Xxx Yyy 2022 27-May-22 10:49am    
My deadline is near
Richard MacCutchan 27-May-22 10:51am    
You will not get any help unless you explain what your problem is; we cannot guess.
Xxx Yyy 2022 27-May-22 11:04am    
there is a problem on my void method
Xxx Yyy 2022 27-May-22 11:04am    
it doesn't run

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you.

So we need you to do the work, and we will help you when you get stuck. That doesn't mean we will give you a step by step solution you can hand in!
Start by explaining where you are at the moment, and what the next step in the process is. Then tell us what you have tried to get that next step working, and what happened when you did.

And looking at your code, you haven't done anything much at all. Your methods are useless because they only work with local variables that are discarded when the method exits, and they don't use the value you pass to them at all - but that's ok because you don't assign it a value before you call the methods anyway!

To be honest, that looks like you threw some code at your screen without thinking about what you were trying to do at all, and hoped that either it would magically work or someone else would re-write it for you so it did
Neither of those things is likely to happen. Ever.

If you are having problems getting started at all, then this may help: How to Write Code to Solve a Problem, A Beginner's Guide[^]
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If a function that calculates a result must return void, the general approach is to provide the result in an argument that the function can update. In Java, you'll have to define an object that contains the result, pass the object to the function, and have the function update the result within the object.
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