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Thread: Need help with another array
 05242011, 06:56 PM #1Member
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Need help with another array
Here is my original code for the application. I need this application to have an array for the different loans. I need to include 7, 15, and 30 as different loan terms for my variable loanTerm. I need to have .0535, .0550, and .0575 as the different interest rates for the variable intRates. Here is my original code.
Java Code:package mortgage; /**The Mortgage class implements an application which calculates the mortgage *payment, interest paid, principal paid and loan balance. * The application prints interest paid, mortgage payment, and loan balance * to output * @author Lekeisha **/ import java.io.IOException; public class Mortgage /**Creates a new instance of Mortgage**/ { public static void main(String[] args) { int amLoanOne = 200000;//initial amount of loan double monIntRate = 0.0;//initiates the monthly interest rate double monPay = 0;//initiates the mortgage payment monIntRate = .0575/12;//interest rate of 5.75% double totMons = 30*12;//term of loan which is 30 years double intsPaid = 0;//initiates interest paid double princPaid = 0;//initiates principal paid double amLoanNxt = 0;//initiates the amount of loan balance after initial amount monPay = amLoanOne*monIntRate/(1(Math.pow((1+monIntRate), (totMons)))); //calculates the mortgage payment intsPaid = amLoanOne*monIntRate; //calculates the interest paid princPaid = monPay  intsPaid; //calculates the principal paid amLoanNxt = amLoanOne  princPaid; //calculates the amount of loan balance after initial amount for(int i = 0; i < 31; i++) { intsPaid+=i;//counter for interest paid princPaid+=i;//counter for principal paid amLoanNxt+=i;//counter for amount of loan balance after initial amount System.out.println("Interest amount is $" + Math.round(intsPaid)+ "."); //calculates the interest paid with interest rate of 5.75% System.out.println("Mortgage payment amount is $" + Math.round(monPay)+ "."); //calculates the mortgage payment amount System.out.println("Loan balance amount is $" + Math.round(amLoanNxt)+ "."); //calculates the loan balance System.out.println("(press Enter to exit)"); //asks user input of 'Enter' to display other lines of text try { System.in.read();//reads user input } catch (IOException e) { return; } } } }
 05242011, 06:59 PM #2Member
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Here is my attempt at it. This is so confusing. Please provide any advice. Thanks.
package mortgages;
Java Code:/**The Mortgage class implements an application which calculates the mortgage *payment, interest paid, principal paid and loan balance. * The application prints interest paid, mortgage payment, and loan balance * to output * @author Lekeisha **/ import java.io.IOException; public class Mortgages /**Creates a new instance of Mortgage**/ { public static void main(String[] args) { double[]loanTerm = {7, 15, 30}; double[]intRates = {.0535, .0550, .0575};//initiates the monthly interest rate calmonintrate(intRates); caltotmons(loanTerm); } public static void calmonintrate(double intRates[]) { for(int counter = 0; counter<intRates.length;counter++) intRates[counter]/12; } public static void caltotmons(double loanTerm[]) { for(int counter = 0; counter<loanTerm.length;counter++) loanTerm[counter]*12; } monPay = amLoanOne*monIntRate/(1(Math.pow((1+monIntRate), (totMons)))); //calculates the mortgage payment intsPaid = amLoanOne*monIntRate; //calculates the interest paid princPaid = monPay  intsPaid; //calculates the principal paid amLoanNxt = amLoanOne  princPaid; //calculates the amount of loan balance after initial amount for(int i = 0; i < 31; i++) { intsPaid+=i;//counter for interest paid princPaid+=i;//counter for principal paid amLoanNxt+=i;//counter for amount of loan balance after initial amount System.out.println("Interest amount is $" + Math.round(intsPaid)+ "."); //calculates the interest paid with interest rate of 5.75% System.out.println("Mortgage payment amount is $" + Math.round(monPay)+ "."); //calculates the mortgage payment amount System.out.println("Loan balance amount is $" + Math.round(amLoanNxt)+ "."); //calculates the loan balance System.out.println("(press Enter to exit)"); //asks user input of 'Enter' to display other lines of text try { System.in.read();//reads user input } catch (IOException e) { return; } } } }
 05242011, 07:05 PM #3
Can you explain what your problem is? Do you get errors?
If so please copy and paste here the FULL text of the error messages.
One possible problem I see is the scope of some of your variables. Many are local to the inside of the main method. That means no other method can see them unless they are passed as arguments. Move their definitions outside of the main method if you want other methods to be able to use them.
 05242011, 07:18 PM #4Member
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Here is my error with running it.
Java Code:Exception in thread "main" java.lang.RuntimeException: Uncompilable source code  Erroneous sym type: calmonintrate at mortgages.Mortgages.main(Mortgages.java:22) Java Result: 1 BUILD SUCCESSFUL (total time: 2 seconds)
 05242011, 07:24 PM #5
What kind of IDE are you using?
The error message mentions "Uncompilable source code" which makes me think the problem is when you try to compile the code, not execute it.
When I try to compile your code I get this:
Running: D:\Java\jdk1.6.0_02\bin\javac.exe Xlint g deprecation classpath D:\JavaDevelopment\;. Mortgages1.java
Mortgages1.java:22: not a statement
intRates[counter]/12;
^
Mortgages1.java:27: not a statement
loanTerm[counter]*12;
^
Mortgages1.java:31: <identifier> expected
monPay = amLoanOne*monIntRate/(1(Math.pow((1+monIntRate), (totMons))));
^
Mortgages1.java:33: <identifier> expected
intsPaid = amLoanOne*monIntRate;
^
Mortgages1.java:36: <identifier> expected
princPaid = monPay  intsPaid;
^
Mortgages1.java:38: <identifier> expected
amLoanNxt = amLoanOne  princPaid;
^
Mortgages1.java:43: illegal start of type
for(int i = 0; i < 31; i++)
^
Mortgages1.java:43: illegal start of type
for(int i = 0; i < 31; i++)
^
Mortgages1.java:43: <identifier> expected
for(int i = 0; i < 31; i++)
^
Mortgages1.java:68: class, interface, or enum expected
}
^
10 errors
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