Thread: New to Programming

Next time you post, please include tags around your code such as ones in my signature.
I've reposted your code in a readable format:

import java.util.*;
 
public class proj1 {
 
    public static void main(String[] args) {
        double monthlyPayment, annualInterest,
                outstandingBalance, accountBalance, paidInterest,
                paidPrincipal;
 
        annualInterestRate = .0625;
        paidInterest = (annualInterest / 12) * outstandingBalance;
        paidPrincipal = monthlyPayment - paidInterest;
        accountBalance = outstandingBalance - paidPrincipal;
 
        System.out.println("Enter this month's payment:");
 
        Scanner keyboard = new Scanner(System.in);
        monthlyPayment = keyboard.nextDouble();
 
        System.out.println("Enter the outstanding balance of the account:");
 
        Scanner keyboard = new Scanner(System.in);
        outstandingBalance = keyboard.nextDouble();
 
        System.out.println("Here is a breakdown of the payment:");
        System.out.println("Interest paid-" paidInterest);
        System.out.println("Amount applied to principal" paidPrincipal);
        System.out.println("After the payment, the account balance is:" accountBalance);
    }
}

• The keyboard object is defined twice, you only need to define keyboard once, and reuse it when you need to.
• In-order to print variables alongside Strings, you need to use the + operator to join them together.
• You attempt to perform paidInterest = (annualInterest / 12) * outstandingBalance; before even initialising outstandingBalance.
• annualInterestRate isn't defined anywhere, either define it, or replace it with one of your already defined variables.

Scanner keyboard = new Scanner(System.in);
monthlyPayment = keyboard.nextDouble();

System.out.println("Enter the outstanding balance of the account:");

Scanner keyboard = new Scanner(System.in);

First error is redeclaration of the variable keyboard.


Secondly in the code below , you are joining string with variable for that , you need to use + operator.

System.out.println("Interest paid-"+ paidInterest);

System.out.println("Interest paid-" paidInterest);
System.out.println("Amount applied to principal" paidPrincipal);
System.out.println("After the payment, the account balance is:" accountBalance);

Third error is

annualInterestRate = .0625;

you hadn't declare this variable.

Not to be picky, but was there something insufficient with my post that made you feel you needed
to repeat it? Not having a go, just very curious

Not to be picky, but was there something insufficient with my post that made you feel you needed
to repeat it? Not having a go, just very curious

No dear.Problem is both of had posted the reply on the same time.

Thank you both for replying, it is greatly appreciated. After attempting to fix the errors you pointed out, this is the code I have:

import java.util.*;
 
public class proj1
{
        public static void main(String[] args) 
        {	double monthlyPayment, annualInterest, 
		           outstandingBalance, accountBalance, paidInterest,
                   paidPrincipal;
 
		annualInterest = .0625;             		
 
		System.out.println("Enter this month's payment: ");
 
		Scanner keyboard = new Scanner(System.in);
		monthlyPayment  = keyboard.nextDouble();		
 
		System.out.println("Enter the outstanding balance of the 
account: ");
 
		outstandingBalance = keyboard.nextDouble();  
 
		paidInterest = (annualInterest / 12) *  
				outstandingBalance;
		paidPrincipal = monthlyPayment - paidInterest;
		accountBalance = outstandingBalance - paidPrincipal;
 
		System.out.println("Here is a breakdown of the 
payment: ");
		System.out.println("Interest paid- " + paidInterest);
        System.out.println("Amount applied to principal- " +
paidPrincipal);
		System.out.println("After the payment, the account 
balance is: " + accountBalance);
	}
}

After compiling, these are the errors I received:

proj1.java:17: unclosed string literal
System.out.println("Enter the outstanding balance of the
^
proj1.java:17: ';' expected
System.out.println("Enter the outstanding balance of the
^
proj1.java:18: illegal start of expression
account: ");
^
proj1.java:18: unclosed string literal
account: ");
^
proj1.java:27: unclosed string literal
System.out.println("Here is a breakdown of the
^
proj1.java:27: ';' expected
System.out.println("Here is a breakdown of the
^
proj1.java:28: illegal start of expression
payment: ");
^
proj1.java:28: unclosed string literal
payment: ");
^
proj1.java:32: unclosed string literal
System.out.println("After the payment, the account
^
proj1.java:32: ';' expected
System.out.println("After the payment, the account
^
proj1.java:33: unclosed string literal
balance is: " + accountBalance);
^
11 errors

It's just a simple problem you have, to fix it just put all your println contents on the same line: as such

        System.out.println("Enter the outstanding balance of the account: ");

Or if you do want to keep print statements going on multiple lines, be sure to close off the String, use the + operator and open up the new String continuation, as such:

        System.out.println("This is a very very very very"
                + "long String indeed...");

Off-topic again:

No dear.Problem is both of had posted the reply on the same time.

Reason I said it was because your post date was: "Yesterday 07:20 AM"
whereas mine was "06-02-2011 10:02 PM". Just saying