Major Java Help

Hey guys i'm coding this program and i have everything working except for the interest rate which brings out this error,

MenuDrivenProgram.java:92: possible loss of precision
found : double
required: int
deposit = balanceCurrent + interest;
^
1 error

Here is my code,

public static void InvestmentReport()
    {
        System.out.printf("*** Investment Report stub ***\n");
        // This is where your Part A solution goes
        System.out.printf("*************** InvestmentReport Menu ***************\n\n");
        Scanner console=new Scanner(System.in);
        int deposit, monthly, interestRate;
        double interest, balanceCurrent;
        System.out.println ("Enter your initial deposit amount in dollars\n");
        deposit = console.nextInt();
         
        System.out.println ("Enter the annual interest rate as a percentage (eg. 6.0)\n");
        interest = console.nextDouble();
       
        System.out.println ("Enter your monthly deposit amount in dollars\n");
        monthly = console.nextInt();
       
        System.out.println ("Savings growth over the next 6 months:\n");
       
        System.out.println ("Balance after first month: $" + deposit);
        deposit = deposit + monthly;
        System.out.println ("Interest earned for this month: $" + interest);
        interest = balanceCurrent * interestRate / 12 / 100;
        deposit = balanceCurrent + interest;
       
        System.out.println ("Balance after second month: $" + deposit);
        deposit = deposit + monthly;
        System.out.println ("Interest earned for this month:\n");
       
        System.out.println ("Balance after third month: $" + deposit);
        deposit = deposit + monthly;
        System.out.println ("Interest earned for this month:\n");
       
        System.out.println ("Balance after fourth month: $" + deposit);
        deposit = deposit + monthly;
        System.out.println ("Interest earned for this month:\n");
       
        System.out.println ("Balance after fifth month: $" + deposit);
        deposit = deposit + monthly;
        System.out.println ("Interest earned for this month:\n");
       
        System.out.println ("Balance after sixth month: $" + deposit);
        deposit = deposit + monthly;
        System.out.println ("Interest earned for this month:\n");
    }

Code (markup):

Anyone able to tell me what i've done wrong and how to fix it? Cheers

 

You are adding 2 double and then storing it in an int which is not allowed.
explanation: deposite (int) = balanceCurrent (double) + interest (double);

2 solutions: 1) you either change deposite to double.
2) you cast, code: deposite= (int)(balanceCurrent + interest);

Casting is forcing the type you want, if we take an example here with the code I provided
lets assume that: balanceCurrent = 5.4 and interest=2.1

deposit = 7

If you don't understant contact me and I will help.

 

Thanks i did get that working but i'm still having a problem. Here is my full code,

import java.util.Scanner;

public class MenuDrivenProgram
{
    private static Scanner s = new Scanner(System.in);
   
    public static void main(String[] args)
    {
        String inputLine;
        char option = ' ';
       
        do
        {
            //Prints the line allowing you to select one of the valid options
            printMenu();
            System.out.printf("Please select a valid option: ");
            inputLine = s.nextLine();
           
            //Prints out an error message if length is equal to 1
            if (inputLine.length() != 1)
            {
                System.out.printf("Error! You did not select a valid option!\n");
                System.out.printf("Please try again\n\n");
            }
            else
            {
                option = inputLine.charAt(0);
                option = Character.toUpperCase(option);
               
                switch (option)
                {
                        //Brings up the InvestmentReport menu
                    case 'A':
                        InvestmentReport();
                        break;
                       
                        //Brings up the RainfallReport menu
                    case 'B':
                        RainfallReport();
                        break;
                       
                        //Exits the program with a goodbye message
                    case 'X':
                        System.out.printf("Exiting the program - goodbye...\n\n");
                        break;
                       
                        //Errors out if keyed in value isn't a valid menu option
                    default:
                        System.out.printf("Error!" +
                                          "\"%c\" is not a valid menu option!\n\n",
                                          option);
                       
                }
            }
           
           
        } while (option != 'X');
    }
    //This prints the main menu and let's you choose between 3 different options. InvestmentReport, RainfallReport and Exiting the program
    public static void printMenu()
    {
        System.out.printf("*************** Assignment 2 Menu ***************\n\n");
        System.out.printf("\tA. InvestmentReport.\n");
        System.out.printf("\tB. RainfallReport.\n");
        System.out.printf("\tX. Exit the program\n\n");
        System.out.printf("*************************************************\n\n");
    }
   
    public static void InvestmentReport()
    {
        System.out.printf("*** Investment Report stub ***\n");
        // This is where your Part A solution goes
        System.out.printf("*************** InvestmentReport Menu ***************\n\n");
        Scanner console=new Scanner(System.in);
        double deposit = 0D;
        double interest = 0D;
        double monthly = 0D;
        double interestRate = 0D;
        System.out.println ("Enter your initial deposit amount in dollars\n");
        deposit = console.nextDouble();
         
        System.out.println ("Enter the annual interest rate as a percentage (eg. 6.0)\n");
        interestRate = console.nextDouble();
       
        System.out.println ("Enter your monthly deposit amount in dollars\n");
        monthly = console.nextDouble();
       
        System.out.println ("Savings growth over the next 6 months:\n");
       
        deposit = deposit + monthly;
        interest = deposit * ((interestRate / 12) / 100);
        deposit = deposit + interest;
        System.out.println ("Balance after first month: $" + deposit);
        System.out.println ("Interest earned for this month: $" + interest);
        System.out.println ("\n");
       
        deposit = deposit + monthly;
        interest = deposit * interestRate / 12 / 100;
        deposit = deposit + interest;
        System.out.println ("Balance after second month: $" + deposit);
        System.out.println ("Interest earned for this month: $" + interest);
        System.out.println ("\n");
       
        deposit = deposit + monthly;
        interest = deposit * interestRate / 12 / 100;
        deposit = deposit + interest;
        System.out.println ("Balance after third month: $" + deposit);
        System.out.println ("Interest earned for this month: $" + interest);
        System.out.println ("\n");
       
        deposit = deposit + monthly;
        interest = deposit * interestRate / 12 / 100;
        deposit = deposit + interest;
        System.out.println ("Balance after fourth month: $" + deposit);
        System.out.println ("Interest earned for this month: $" + interest);
        System.out.println ("\n");
       
        deposit = deposit + monthly;
        interest = deposit * interestRate / 12 / 100;
        deposit = deposit + interest;
        System.out.println ("Balance after fifth month: $" + deposit);
        System.out.println ("Interest earned for this month: $" + interest);
        System.out.println ("\n");
       
        deposit = deposit + monthly;
        interest = deposit * interestRate / 12 / 100;
        deposit = deposit + interest;
        System.out.println ("Balance after sixth month: $" + deposit);
        System.out.println ("Interest earned for this month: $" + interest);
        System.out.println ("\n");
    }
   
   
    public static void RainfallReport()
    {
        System.out.printf("*** Rainfall Report stub ***\n");
        // This is where your Part B solution goes
        System.out.printf("*************** RainfallReport Menu ***************\n\n");
            Scanner sc = new Scanner(System.in);
            double[] fall = new double[7];
            for (int i = 0 ; i < 7 ; i++)
            {
                System.out.print("Enter RainFall Measure In Millimetres: "  + (i+1) + ": ");
                fall[i] = sc.nextDouble();
            }
            System.out.println("R.Fall Reverse Order ");
            for ( int i = 0;  i>=7    ;  i--)
            {
           
        }
    }
   
   
}

Code (markup):

This is the data it should be displaying,

Enter your initial deposit amount in dollars: 1000
Enter the annual interest rate as a percentage (eg. 6.0): 6.0
Enter your monthly deposit amount in dollars: 500
Savings growth over the next 6 months:
Balance after first month: $1507.50
Interest earned for this month: $7.50
Balance after second month: $2017.54
Interest earned for this month: $10.04
Balance after third month: $2530.13
Interest earned for this month: $12.59
Balance after fourth month: $3045.28
Interest earned for this month: $15.15
Balance after fifth month: $3563.00
Interest earned for this month: $17.73
Balance after sixth month: $4083.32
Interest earned for this month: $20.32

But instead it displays it like this,

Enter your initial deposit amount in dollars

1000
Enter the annual interest rate as a percentage (eg. 6.0)

6.0
Enter your monthly deposit amount in dollars

500
Savings growth over the next 6 months:

Balance after first month: $1507.5
Interest earned for this month: $7.5
Balance after second month: $2017.5375
Interest earned for this month: $10.0375
Balance after third month: $2530.1251875
Interest earned for this month: $12.5876875
Balance after fourth month: $3045.2758134375
Interest earned for this month: $15.1506259375
Balance after fifth month: $3563.002192504687
Interest earned for this month: $17.726379067187498
Balance after sixth month: $4083.3172034672107
Interest earned for this month: $20.315010962523434

As you can see it has too many decimal points and i need it to round off to the nearest number. How would i go about doing this? Please help? Thankyou.

 

import java.text.DecimalFormat;
import java.util.Scanner;

public class MenuDrivenProgram
{
private static Scanner s = new Scanner(System.in);

public static void main(String[] args)
{
String inputLine;
char option = ' ';

do
{
//Prints the line allowing you to select one of the valid options
printMenu();
System.out.printf("Please select a valid option: ");
inputLine = s.nextLine();

//Prints out an error message if length is equal to 1
if (inputLine.length() != 1)
{
System.out.printf("Error! You did not select a valid option!\n");
System.out.printf("Please try again\n\n");
}
else
{
option = inputLine.charAt(0);
option = Character.toUpperCase(option);

switch (option)
{
//Brings up the InvestmentReport menu
case 'A':
InvestmentReport();
break;

//Brings up the RainfallReport menu
case 'B':
RainfallReport();
break;

//Exits the program with a goodbye message
case 'X':
System.out.printf("Exiting the program - goodbye...\n\n");
break;

//Errors out if keyed in value isn't a valid menu option
default:
System.out.printf("Error!" +
"\"%c\" is not a valid menu option!\n\n",
option);

}
}


} while (option != 'X');
}
//This prints the main menu and let's you choose between 3 different options. InvestmentReport, RainfallReport and Exiting the program
public static void printMenu()
{
System.out.printf("*************** Assignment 2 Menu ***************\n\n");
System.out.printf("\tA. InvestmentReport.\n");
System.out.printf("\tB. RainfallReport.\n");
System.out.printf("\tX. Exit the program\n\n");
System.out.printf("*************************************************\n\n");
}

public static void InvestmentReport()
{
System.out.printf("*** Investment Report stub ***\n");
// This is where your Part A solution goes
System.out.printf("*************** InvestmentReport Menu ***************\n\n");
Scanner console=new Scanner(System.in);
double deposit = 0D;
double interest = 0D;
double monthly = 0D;
double interestRate = 0D;

DecimalFormat fmt = new DecimalFormat ("0.###");

System.out.println ("Enter your initial deposit amount in dollars\n");
deposit = console.nextDouble();

System.out.println ("Enter the annual interest rate as a percentage (eg. 6.0)\n");
interestRate = console.nextDouble();

System.out.println ("Enter your monthly deposit amount in dollars\n");
monthly = console.nextDouble();

System.out.println ("Savings growth over the next 6 months:\n");

deposit = deposit + monthly;
interest = deposit * ((interestRate / 12) / 100);
deposit = deposit + interest;
System.out.println ("Balance after first month: $" + fmt.format(deposit));
System.out.println ("Interest earned for this month: $" + fmt.format(interest));
System.out.println ("\n");

deposit = deposit + monthly;
interest = deposit * interestRate / 12 / 100;
deposit = deposit + interest;
System.out.println ("Balance after second month: $" + fmt.format(deposit));
System.out.println ("Interest earned for this month: $" + interest);
System.out.println ("\n");

deposit = deposit + monthly;
interest = deposit * interestRate / 12 / 100;
deposit = deposit + interest;
System.out.println ("Balance after third month: $" + fmt.format(deposit));
System.out.println ("Interest earned for this month: $" + fmt.format(interest));
System.out.println ("\n");

deposit = deposit + monthly;
interest = deposit * interestRate / 12 / 100;
deposit = deposit + interest;
System.out.println ("Balance after fourth month: $" + fmt.format(deposit));
System.out.println ("Interest earned for this month: $" + fmt.format(interest));
System.out.println ("\n");

deposit = deposit + monthly;
interest = deposit * interestRate / 12 / 100;
deposit = deposit + interest;
System.out.println ("Balance after fifth month: $" + fmt.format(deposit));
System.out.println ("Interest earned for this month: $" + fmt.format(interest));
System.out.println ("\n");

deposit = deposit + monthly;
interest = deposit * interestRate / 12 / 100;
deposit = deposit + interest;
System.out.println ("Balance after sixth month: $" + fmt.format(deposit));
System.out.println ("Interest earned for this month: $" + fmt.format(interest));
System.out.println ("\n");
}


public static void RainfallReport()
{
System.out.printf("*** Rainfall Report stub ***\n");
// This is where your Part B solution goes
System.out.printf("*************** RainfallReport Menu ***************\n\n");
Scanner sc = new Scanner(System.in);
double[] fall = new double[7];
for (int i = 0 ; i < 7 ; i++)
{
System.out.print("Enter RainFall Measure In Millimetres: " + (i+1) + ": ");
fall = sc.nextDouble();
}
System.out.println("R.Fall Reverse Order ");
for ( int i = 0; i>=7 ; i--)
{

}
}


}




I am pretty sure that there is a way you format once, but I am too tired , to think. It is 4:00 am now and I am so sleepy This works and it is pretty simple, you add:
DecimalFormat fmt = new DecimalFormat ("0.###");
and whenever you want to display a formatted number you put: fmt.format(deposit)

 

sorry I don't know how to display a java file.

 

Thanks so much for that it works perfectly.