TL:DR program compiles but results do not print out
Hi, I am working on this assignment for my 1st year programming class. Here is the question:
: In this problem, you need to compute compound interest for various interest rates and various time periods.
More precisely, this means that given an amount to invest and an interest rate (a specific amount above the prime interest
rate, which for this assignment is 1.00 percent), compute the amount of money an individual would have after n years.
The formula to calculate this is given by:
final amount = amount(1.0 + (prime+rate/100.0)^n)
we need to invoke another class in this assignment from a prebuilt so the class they gave us was
import java.util.*;
//DO NOT PUT OTHER METHODS IN THIS CLASS or make any changes to it
public class UserInteraction
{
public String getStringValueFromUser(String message)
{
String value = "";
Scanner input = new Scanner(System.in);
System.out.print(message + " : ");
value = input.nextLine();
return value;
}
//DO NOT PUT OTHER METHODS IN THIS CLASS or make any changes to it
public double getDoubleValueFromUser(String message)
{
double value = 0;
Scanner input = new Scanner(System.in);
System.out.print(message + " : ");
value = input.nextDouble();
return value;
}
//DO NOT PUT OTHER METHODS IN THIS CLASS or make any changes to it
public int getIntValueFromUser(String message)
{
int value = 0;
Scanner input = new Scanner(System.in);
System.out.print(message + " : ");
value = input.nextInt();
return value;
}
//DO NOT PUT OTHER METHODS IN THIS CLASS or make any changes to it
}
and my code is here
import java.util.*;
public class InterestRate
{
UserInteraction input = new UserInteraction();
public static void main (String[] args)
{
InterestRate program = new InterestRate();
program.execute();
}
void execute()
{
double initial_money = input.getDoubleValueFromUser("Your initial amount");
double prime_rate = input.getDoubleValueFromUser("Enter the Prime Rate");
double InterestRate = input.getDoubleValueFromUser("Enter the Interest Rate as a value above prime");
double time = input.getDoubleValueFromUser("Enter the length of the investment in years to a decimal");
double InterestRate2 = input.getDoubleValueFromUser("Enter the second Interest Rate as a value above prime");
Calculations (initial_money, prime_rate, InterestRate, time);
Calculations2 (initial_money, prime_rate, InterestRate2, time);
}
void finaltotal(double totalrate4, double totalrate4a, double initial_money, double prime_rate, double InterestRate, double time, double InterestRate2)
{
double final_amount = (initial_money * totalrate4);
double final_amounta = (initial_money * totalrate4a);
printWinnings(final_amount, initial_money, InterestRate, prime_rate, final_amounta, time);
}
double Calculations(double initial_money, double prime_rate, double InterestRate, double time)
{
double totalrate = prime_rate + InterestRate;
double totalrate2 = totalrate / 100.0;
double totalrate3 = totalrate2 + 1.0;
double totalrate4 = Math.pow(time, totalrate3);
return totalrate4;
}
double Calculations2(double initial_money, double prime_rate, double InterestRate2, double time)
{
double totalrate1a = prime_rate + InterestRate2;
double totalrate2a = totalrate1a / 100.0;
double totalrate3a = totalrate2a + 1.0;
double totalrate4a = Math.pow(time, totalrate3a);
//double final_amounta = initial_money * totalrate4;
return totalrate4a;
}
void printWinnings(double final_amount, double initial_money, double prime_rate, double InterestRate, double time, double final_amounta)
{
System.out.println(" The amount of money you can expect to get over the " + time + " years you invest will be " + final_amount + " with your initial investment of " + initial_money + " at an rate of " + InterestRate);
}
}
So I typed it all up, and the program compiles, but when I run it, nothing prints out.
Technically you didn't ask a question you made a statement. I assume you meant to ask why your program does not produce any output of results after the initial prompts for input.
If you follow the execution of your code it goes like this:
The main method is executed first:
public static void main(String[] args)
{
InterestRate program = new InterestRate();
program.execute();
}
As you can see your execute method is called from main, so now the execution goes here:
void execute() {
double initial_money = input
.getDoubleValueFromUser("Your initial amount");
double prime_rate = input
.getDoubleValueFromUser("Enter the Prime Rate");
double InterestRate = input
.getDoubleValueFromUser("Enter the Interest Rate as a value above prime");
double time = input
.getDoubleValueFromUser("Enter the length of the investment in years to a decimal");
double InterestRate2 = input
.getDoubleValueFromUser("Enter the second Interest Rate as a value above prime");
Calculations(initial_money, prime_rate, InterestRate, time);
Calculations2(initial_money, prime_rate, InterestRate2, time);
}
Before I move on I just want to mention that naming methods so that they begin with a capital letter violates accepted Java standard naming practice. Methods are always named using camel case and starting with lowercase. Similarly, naming variables in this manner also violates the naming conventions of Java. For example, InterestRate should be interestRate because otherwise it reads like a class name. Generally only constants use underscores between words so things like initial_money would be more consistent with naming convention if written as initialMoney.
Getting back to your code - from where we left off your logic flows into Calculations and Calculations2:
double Calculations(double initial_money, double prime_rate,
double InterestRate, double time) {
double totalrate = prime_rate + InterestRate;
double totalrate2 = totalrate / 100.0;
double totalrate3 = totalrate2 + 1.0;
double totalrate4 = Math.pow(time, totalrate3);
return totalrate4;
}
double Calculations2(double initial_money, double prime_rate,
double InterestRate2, double time) {
double totalrate1a = prime_rate + InterestRate2;
double totalrate2a = totalrate1a / 100.0;
double totalrate3a = totalrate2a + 1.0;
double totalrate4a = Math.pow(time, totalrate3a);
// double final_amounta = initial_money * totalrate4;
return totalrate4a;
}
Now you will notice none of these methods have any calls to System.out.print or System.out.println. This is why you don't see any output.
Related
This is a problem for school
Write a method drivingCost() with input parameters drivenMiles, milesPerGallon, and dollarsPerGallon, that returns the dollar cost to drive those miles. All items are of type double. If the method is called with
50 20.0 3.1599
the method returns 7.89975.
Define that method in a program whose inputs are the car's miles/gallon and the gas dollars/gallon (both doubles). Output the gas cost for 10 miles, 50 miles, and 400 miles, by calling your drivingCost() method three times.
Output each floating-point value with two digits after the decimal point, which can be achieved as follows:
System.out.printf("%.2f", yourValue);
The output ends with a newline.
Ex: If the input is:
20.0 3.1599
the output is:
1.58 7.90 63.20
Your program must define and call a method:
public static double drivingCost(double drivenMiles, double milesPerGallon, double dollarsPerGallon)
So far my code seems to make sense, but I keep getting this error, and I am not sure what it means,
Exception in thread "main" java.util.NoSuchElementException
at java.base/java.util.Scanner.throwFor(Scanner.java:937)
at java.base/java.util.Scanner.next(Scanner.java:1594)
Here is my code
import java.util.Scanner;
public class LabProgram {
public static double drivingCost(double drivenMiles, double milesPerGallon, double dollarsPerGallon) {
double totalCost = (dollarsPerGallon * drivenMiles) / milesPerGallon;
return totalCost;
}
public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
double milesPerGallon = scnr.nextDouble();
double dollarsPerGallon = scnr.nextDouble();
double drivenMiles = scnr.nextDouble();
System.out.printf("%.2f ", drivingCost(drivenMiles, milesPerGallon, dollarsPerGallon) * 10);
System.out.printf("%.2f ", drivingCost(drivenMiles, milesPerGallon, dollarsPerGallon) * 50);
System.out.printf("%.2f\n", drivingCost(drivenMiles, milesPerGallon, dollarsPerGallon) * 400);
}
}
drivenMiles is not one of the inputs, you provide it in the calls to drivingCost().
System.out.printf("%.2f ", drivingCost(10, milesPerGallon, dollarsPerGallon));
System.out.printf("%.2f ", drivingCost(50, milesPerGallon, dollarsPerGallon));
System.out.printf("%.2f\n", drivingCost(400, milesPerGallon, dollarsPerGallon));
The reason you are getting NoSuchElementException is that there are only two input parameters and you are trying to read three parameters.
To avoid this kind of errors, always check user input.
It can be done using hasNextDouble:
Scanner scnr = new Scanner(System.in);
double milesPerGallon = (scnr.hasNextDouble() ? sc.nextDouble() : 0.0;
Also always watch out Divison by Zero.
The code will throw a exception if milesPerGallon is zero. So, solve this using ternary operand:
double totalCost = (dollarsPerGallon * drivenMiles) / (milesPerGallon!=0?milesPerGallon:1);
Although the code above result into a correct result.
Changing to code below make a little more sense:
return (drivenMiles / (milesPerGallon!=0?milesPerGallon:1)) * dollarsPerGallon;
The correct code is:
import java.util.Locale;
import java.util.Scanner;
public class LabProgram {
public static double drivingCost(double drivenMiles, double milesPerGallon, double dollarsPerGallon) {
//Avoid Division by zero
return (drivenMiles / (milesPerGallon!=0?milesPerGallon:1)) * dollarsPerGallon;
}
public static void main(String[] args) {
//Fix user input to US number formats
Locale.setDefault(Locale.ENGLISH);
Scanner scnr = new Scanner(System.in);
double milesPerGallon = (scnr.hasNextDouble()) ? scnr.nextDouble() : 0.00;
double dollarsPerGallon = (scnr.hasNextDouble()) ? scnr.nextDouble() : 0.00;
System.out.printf("10mi: $%.2f " , drivingCost( 10, milesPerGallon, dollarsPerGallon));
System.out.printf("50mi: $%.2f " , drivingCost( 50, milesPerGallon, dollarsPerGallon));
System.out.printf("400mi: $%.2f\n", drivingCost(400, milesPerGallon, dollarsPerGallon));
}
}
Compile this with: javac LabProgram.java
Run this with: java LabProgram
Output:
20.0 3.1599
10mi: $1.58 50mi: $7.90 400mi: $63.20`
Although I'm too late here, still posting this for anyone struggling with this. The following code gave me the correct output:
import java.util.Scanner;
public class LabProgram {
public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
Double milesPerGallon = 0.0;
Double dollarsPerGallon = 0.0;
Double gasCost = 0.0;
Double gasCost20 = 0.0;
Double gasCost75 = 0.0;
Double gasCost500 = 0.0;
milesPerGallon = scnr.nextDouble();
dollarsPerGallon = scnr.nextDouble();
gasCost = dollarsPerGallon / milesPerGallon;
gasCost20 = gasCost * 20;
System.out.printf("%.2f", gasCost20);
System.out.print(" ");
gasCost75 = gasCost * 75;
System.out.printf("%.2f", gasCost75);
System.out.print(" ");
gasCost500 = gasCost * 500;
System.out.printf("%.2f%n", gasCost500);
}
}
I am trying to do the calculations for the interest in another method, and I know that I have to make another method outside of main and then put return an the end, but I have no idea what to title this new method and how to go about doing the calculations there. I think it is the while loop that is confusing me. I have done this once before on a different project, so I have an idea of how to do it, but this project isn't anything like the other one and I don't really understand it. Any help is extremely appreciated as I have been working on this for a long time and just want to get it over with. Thanks in advance.
import java.util.Scanner; // This allows for the use of the scanner in the class
public class SavingsAccount // Start of class
{
public static void main(String[]args) // Start of main
{
double P; // These store the amounts that will be used in the accruing interest formula
double i;
double n;
double S = 0;
int timesLooped = 0;
Scanner readConsole = new Scanner(System.in); // This is the scanner
System.out.println("I am a savings account interest calculator."); // Prompts the user for input
System.out.println("How much money have you deposited?");
P = readConsole.nextDouble();
S = P;
System.out.println("Now, what is the annual interest rate? (i.e. .05)");
i = readConsole.nextDouble();
System.out.println("Finally, how long do you plan on having the money in the account?");
n = readConsole.nextDouble();
while (timesLooped <= n)
{
S = S + (P * i);
timesLooped += 1;
}
System.out.println("Your balance in that time span is " + S + "."); // Tells you your ending balance
}
}
Based on your comment, I think you want this:
private static double addInterest(double S, double P, double i)
{
return S + (P * i);
}
...
public static void main()
{
...
while (timesLooped <= n)
{
S = addInterest(S, P, i);
}
EDIT
I made some small improvements just for fun:
I put the entire interest calculation into the function and used exponentiation rather than a loop.
I gave the variables more descriptive names.
I used System.out.format to print the result.
Here's the code:
private static double computeCompoundInterest(double principal, double rate,
double years) {
return principal * Math.pow(1 + rate, years);
}
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("I am a savings account interest calculator.");
System.out.println("How much money have you deposited?");
double principal = scanner.nextDouble();
System.out.println("Now, what is the annual interest rate? (i.e. .05)");
double rate = scanner.nextDouble();
System.out.println("How many years will you hold that money in the account?");
double years = scanner.nextDouble();
double total = computeCompoundInterest(principal, rate, years);
System.out.format("Your balance at the end of that period will be %.2f.\n", years, total);
}
this is my first question on the site. I am a fresh CS student needing some help with something that is probably really simple. The code as is will compile. When I enter in the values as the program asks, it stores the values wrong. It will store the right values for gross pay and savings rate but the IRA rate comes back as 100% even when entered at 6.9 and it seems it stores the IRA rate in saveAmount. Please halp me figure out what I am doing wrong here.
import java.text.DecimalFormat;
import java.util.*;
public class CollinDunn_1_05 {
static Scanner console = new Scanner(System.in);
static DecimalFormat formatCash = new DecimalFormat("#,###.00");
static double iraTotal = 0.0;
static double saveAmount = 0.0;
static double totalSave = 0.0;
static String line = "";
public static void main (String [] args) {
// Input variables
double grossPay = 0.0; // The gross pay from a users paycheck
double saveRate = 0.0; // This is the user entered savings rate
double iraRate= 0.0; // The IRA investment rate
String whichOne = ""; // A temp variable to pass a string type into UserInput
printInfo();
grossPay = userInput("gross pay");
saveRate = userInput("savings rate");
iraRate = userInput("IRA rate");
iraTotal = iraAmount(grossPay, iraRate);
saveAmount = savingsAmount(grossPay, saveRate);
outputResults(grossPay, saveRate, saveAmount, iraRate, iraTotal);
return;
} // End Main
public static void printInfo() {
System.out.println ("This program uses methods to calculate \n"
+ "savings amounts and IRA investment amounts \n"
+ "from user input consisiting of their gross pay, \n"
+ "their desired savings rate and IRA rate, made by "
+ " Collin Dunn");
return;
} // End ProgramInfo
public static double userInput(String whichOne) {
double saveMe = 0.0;
System.out.print("Please enter your " + whichOne + ": ");
saveMe = console.nextDouble();
return saveMe;
} // End userInput
public static double iraAmount(double grossPay, double iraRate) {
iraTotal = grossPay * (iraRate / 100.0);
return iraTotal;
} // End iraAmount
public static double savingsAmount(double grossPay, double saveRate) {
saveAmount = grossPay * (saveRate / 100.0);
return saveAmount;
} // End savingsAmount
public static void outputResults(double grossPay, double saveRate, double iraRate,
double saveAmount, double iraTotal) {
totalSave = saveAmount + iraTotal;
System.out.print ("With a gross pay of $" + formatCash.format(grossPay)
+ ", a savings rate of %" + formatCash.format(saveRate)
+ " and a IRA rate of %" +formatCash.format(iraRate)
+ ".\n Your savings amount will be $" + formatCash.format(saveAmount)
+ ", with a investment amount of $" + formatCash.format(iraTotal)
+ ".\n Which leaves you with a total savings of $" +
+ totalSave + ". Way to go for paying yourself!" );
return;
} // End outputResults
} //End Class
Your only issue is the order of arguments you pass to or have set on the outputResults() method.
Change the signature of the method to:
public static void outputResults(double grossPay, double saveRate, double saveAmount, double iraRate, double iraTotal) {
Which now matches how you call the method:
outputResults(grossPay, saveRate, saveAmount, iraRate, iraTotal);
Let me make a couple of additonal suggestions:
1) You are consistently naming arguments in your method signatures the same names as global variables, which makes it confusing which is which when accessing the variable in the method. Either avoid using the same names for the method input variables, or use something like this.amount = amount to make it more obvious of your intention.
2) Avoid static unless you have a valid reason to use it (which is pretty rare).
Instead, take advantage of Java's Object oriented nature and create an instance of your class in the main method and call methods on that instance. This will make your code more readable, reliable, and reusable.
3) In a method that returns type 'void', you don't need to add the empty return; statement.
To correct your issue and also demonstrate the points I listed, I have refactored your code and provided it below. By the way, you have a lot of potential. Despite the fact there are a few details you can improve, for being a first year CS student, your code is well written and thought out. Good job!
import java.text.DecimalFormat;
import java.util.*;
public class CollinDunn_1_05 {
DecimalFormat formatCash = new DecimalFormat("#,###.00");
double iraTotal = 0.0;
double saveAmount = 0.0;
double totalSave = 0.0;
double grossPay = 0.0; // The gross pay from a users paycheck
double saveRate = 0.0; // This is the user entered savings rate
double iraRate= 0.0; // The IRA investment rate
public CollinDunn_1_05(double gross, double saveRt, double iraRt){
this.grossPay = gross;
this.saveRate = saveRt;
this.iraRate = iraRt;
}
public void calculate(){
calcIraAmount();
calcSavingsAmount();
}
public static void main (String [] args) {
Scanner scanner = new Scanner(System.in);
printInfo();
CollinDunn_1_05 program = new CollinDunn_1_05(
userInput("gross pay", scanner),
userInput("savings rate", scanner),
userInput("IRA rate", scanner)
);
program.calculate();
program.outputResults();
} // End Main
public static void printInfo() {
System.out.println ("This program uses methods to calculate \n"
+ "savings amounts and IRA investment amounts \n"
+ "from user input consisiting of their gross pay, \n"
+ "their desired savings rate and IRA rate, made by "
+ " Collin Dunn");
return;
} // End ProgramInfo
public static double userInput(String whichOne, Scanner console) {
double saveMe = 0.0;
System.out.print("Please enter your " + whichOne + ": ");
saveMe = console.nextDouble();
return saveMe;
} // End userInput
public void calcIraAmount() {
iraTotal = grossPay * (iraRate / 100.0);
} // End iraAmount
public void calcSavingsAmount() {
saveAmount = grossPay * (saveRate / 100.0);
} // End savingsAmount
public void outputResults() {
totalSave = saveAmount + iraTotal;
System.out.print ("With a gross pay of \$" + formatCash.format(grossPay)
+ ", a savings rate of %" + formatCash.format(saveRate)
+ " and a IRA rate of %" +formatCash.format(iraRate)
+ ".\n Your savings amount will be \$" + formatCash.format(saveAmount)
+ ", with a investment amount of \$" + formatCash.format(iraTotal)
+ ".\n Which leaves you with a total savings of \$" +
+ totalSave + ". Way to go for paying yourself!" );
} // End outputResults
} //End Class
import java.util.Scanner ;
public class CollinsHealthCalculator {
double ACTIVITY_FACTOR = 1.375;
public static void main (String[] args) {
newHealthCalcDescription ();
Scanner keyboard = new Scanner (System.in);
System.out.println ("What is your weight in pounds? ");
double weightlb = keyboard.nextDouble ();
System.out.println ("What is your height in inches? ");
double heightin = keyboard.nextDouble ();
System.out.println ("What is your age in years? ");
double ageYears = keyboard.nextDouble ();
double WEIGHT_KILOGRAMS = weightlb / 2.2;
double HEIGHT_METERS = heightin * .0254;
double weightkg = WEIGHT_KILOGRAMS;
double heightm = HEIGHT_METERS;
double computingBMI (BMI, weightkg, heightm);
maleBMR (heightm, weightkg, ageYears);
femaleBMR (heightm, weightkg, ageYears);
showResults (BMI, caloriesm, caloriesf);
public static newHealthCalcDescription () {
System.out.println("This calculator will determine your BMI "
+ "(Body Mass Index). While also it will determine the amount "
+ "of calories needed to maintain weight.");
}
//Computing the BMI
public static void computingBMI (double BMI, double weightkg, double heightm){
BMI = weightkg/(Math.pow(heightm, 2));
}
//Computing BMR for male and female
public static void maleBMR (double heightm, double weightkg, double ageYears) {
double HEIGHT_CENTIMETERS = heightm * 100;
double heightcm = HEIGHT_CENTIMETERS ;
double BMRForMales = 13.397 * weightkg + 4.799 * heightcm - 5.677 * ageYears + 88.362;
double caloriesm = Math.round(BMRForMales * 1.375);
}
public static void femaleBMR (double heightm, double weightkg, double ageYears) {
double HEIGHT_CENTIMETERS = heightm * 100;
double heightcm = HEIGHT_CENTIMETERS ;
double BMRForFemales = 9.247 * weightkg + 3.098 * heightcm - 4.330 * ageYears + 447.593;
double caloriesf = Math.round(BMRForFemales * 1.375);
}
public static void showResults (double BMI, double caloriesm, double caloriesf) {
//Show results
System.out.printf ("%nYour BMI is: %7.1f", BMI);
System.out.println ("A BMI between 18.5 to 24.9 is considered normal.");
System.out.println ();
System.out.println ("To maintain current weight:");
System.out.print ("Men need to eat " + caloriesm);
System.out.println (" calories per day.");
System.out.print ("Females need to eat " + caloriesf);
System.out.println (" calories per day.");
}
}
I'm trying to get the code to pass down statements but I'm new to programming and have no clue on how to go about getting method passed down to another method. I've tried researching everywhere but I've had little luck in finding any help. Please help so I can make my programm functional I'm excited to learn just need help.
You can try giving the variables the global scope(outside the method). You may learn about it here.
When you declare a variable inside a method (i.e. code block), it is local to that block. So you cannot use that variable in any other method. Here the best option for you to do is to declare the variable, i.e. like weightkg etc as class variables.
You can change the return type of the methods from void to double and store the returned result and send the results to other methods.
for eg.
public static double computingBMI (double BMI, double weightkg, double heightm){
return weightkg/(Math.pow(heightm, 2));
}
I am having an issue with a method returning to the main method. It is saying that amount in "return amount" cannot be resolved to a variable. Where am I off on this??
This is the message I get:
Multiple markers at this line
- Void methods cannot return a
value
- amount cannot be resolved to a
variable
Here is the code:
import java.util.Scanner;
public class Investment {
public static void main(String[]args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter the amount invested: ");
double amount = input.nextDouble();
System.out.print("Enter the annual interest rate: ");
double interest = input.nextDouble();
int years = 30;
System.out.print(futureInvestmentValue(amount, interest, years)); //Enter output for table
}
public static double futureInvestmentValue(double amount, double interest, int years) {
double monthlyInterest = interest/1200;
double temp;
double count = 1;
while (count < years)
temp = amount * (Math.pow(1 + monthlyInterest,years *12));
amount = temp;
System.out.print((count + 1) + " " + temp);
}
{
return amount;
}
}
You curly braces are not correct. The compiler - and me - was confused about that.
This should work (at least syntactically):
import java.util.Scanner;
public class Investment {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter the amount invested: ");
double amount = input.nextDouble();
System.out.print("Enter the annual interest rate: ");
double interest = input.nextDouble();
int years = 30;
System.out.print(futureInvestmentValue(amount, interest, years));
}
public static double futureInvestmentValue(
double amount, double interest, int years) {
double monthlyInterest = interest / 1200;
double temp = 0;
double count = 1;
while (count < years)
temp = amount * (Math.pow(1 + monthlyInterest, years * 12));
amount = temp;
System.out.print((count + 1) + " " + temp);
return amount;
}
}
Remove amount from its own scope As a start. Also from the method futureInvestmentValue, you take in amount as an argument but the value is never modified so you're returning the same value being passed which is most likely not the desired outcome.
remove return amount from its own scope
the method futureInvestmentValue... You can't modify any of the parameters inside the method so you have to declare another variable besides amount inside the method (maybe it's the temp variable you keep using) and return that instead
when you return something, the return statement is always inside the method. Never outside it while inside its own braces (never seen this before...)
import java.util.Scanner;
public class Investment {
public static void main(String[]args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter the amount invested: ");
double amount = input.nextDouble();
System.out.print("Enter the annual interest rate: ");
double interest = input.nextDouble();
int years = 30;
System.out.print(futureInvestmentValue(amount, interest, years)); //Enter output for table
}
public static double futureInvestmentValue(double amount, double interest, int years) {
double monthlyInterest = interest/1200;
double temp;
double count = 1;
while (count < years) {
temp = amount * (Math.pow(1 + monthlyInterest,years *12));
System.out.print((count + 1) + " " + temp);
}
return amount;
}
}