CODEWITHSUNDEEP
javacompiler-errors
bhsingh
bhsingh

Reputation: 101

Unknown Java Error

When I try to run, I enter the daily fine and I get this error "java.lang.stringindexoutofboundsexception string index out of range: 10 (in java.lang.String)" I do not know why.

import java.util.Scanner;
    public class Fines 
        {
            public static void main(String[] args) 
                {
                    //Makes the Scanner Object
                    Scanner in = new Scanner(System.in);
                    //Decoration
                    String decor = "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
                    //Integers
                    int chkMonthInt;
                    int chkDayInt;
                    int chkYearInt;
                    int lateMonthInt;
                    int lateDayInt;
                    int lateYearInt;
                    int monthsLate;
                    int daysLate;
                    int yearsLate;
                    double rateDouble;
                    //Obtaining Information
                    System.out.print("Enter Last Name: ");
                    String Last = in.next();
                    System.out.print("Enter First Name: ");
                    String First = in.next();
                    System.out.print("Enter SSN: ");
                    String SSN = in.next();
                    System.out.print("Enter the title of the book: ");
                    String TitleA1 = in.next();
                    String TitleA2 = in.nextLine();
                    System.out.print("Enter the date checked out (MM/DD/YYYY): ");
                    String Date = in.next();
                    System.out.print("Enter current date (MM/DD/YYYY): ");
                    String Due = in.next();
                    System.out.print("Enter daily fine rate: ");
                    String Rate = in.next();
                    //Stringing Checkout dates
                    String chkMonth = Date.substring(0, 2);
                    String chkDay = Date.substring(3, 5);
                    String chkYear = Date.substring(6, 10);
                    //Stringing Due dates
                    String lateMonth = Due.substring(0, 2);
                    String lateDay = Due.substring(3, 5);
                    String lateYear = Due.substring(6, 10);
                    //Parsing
                    chkMonthInt = Integer.parseInt(chkMonth);
                    chkDayInt = Integer.parseInt(chkDay);
                    chkYearInt = Integer.parseInt(chkYear);
                    lateMonthInt= Integer.parseInt(lateMonth);
                    lateDayInt = Integer.parseInt(lateDay);
                    lateYearInt = Integer.parseInt(lateYear);
                    rateDouble = Double.parseDouble(Rate);
                    //Calculations
                    monthsLate = (lateMonthInt - chkMonthInt);
                    daysLate = (lateDayInt - chkDayInt);
                    yearsLate = (lateYearInt - chkYearInt);
                    //Print out the information
                    System.out.println("\n");
                    System.out.println("To: " + Last + ", " + First + "\t\tAccount: " + Last + First.substring(0, 3) + SSN.substring(6, 10));
                    System.out.println("From: Librarian");
                    System.out.println("Subject: Overdue Notice");
                    System.out.println(decor);
                    System.out.println(TitleA1 + TitleA2 + " was checked out on: " + Date);
                    System.out.println("This book is currently " + monthsLate + "/" + daysLate + "/" + yearsLate + " days late.");
                    System.out.println("Your fine has accumulated to: $" + (daysLate * rateDouble));


                }

        }

Upvotes: 0

Views: 154

Answers (4)

Dispersia
Dispersia

Reputation: 1438

Java is zero indexed. Say your social is 123456789 that is 0-8, so calling 6-10 won't work, if you want the last 4, it would be 5-9 (since last is non-inclusive). Also, you need to parse this, what if the user enters 123-45-6789?

You didn't actually show on which line you were getting this for however, but the above example shows the error in all of your - to the tenth substring, methods.

A way to the above question would be as simple as

SSN.substring(SSN.length() - 4, SSN.length())

Upvotes: 1

ThijsM
ThijsM

Reputation: 200

You are sure the Date and Due strings are correctly filled in? It could be that you are doing trying to get a substring from a string that isn't that long. :)

More info can be found here: http://docs.oracle.com/javase/7/docs/api/java/lang/StringIndexOutOfBoundsException.html

or here

Java substring : string index out of range

Upvotes: 0

Elliott Frisch
Elliott Frisch

Reputation: 201527

One (or both) of String Date or String Due is not 10 characters long,

String chkMonth = Date.substring(0, 2);
String chkDay = Date.substring(3, 5);
String chkYear = Date.substring(6, 10); // <-- Here
//Stringing Due dates
String lateMonth = Due.substring(0, 2);
String lateDay = Due.substring(3, 5);
String lateYear = Due.substring(6, 10); // <-- and/or Here

The easiest solution I can see is to add a check.

 String chkYear = (Date.length() >= 10) ? Date.substring(6, 10) : "";
 // ...
 String lateYear = (Due.length() >= 10) ? Due.substring(6, 10) : "";

Also, Java naming conventions would be String date and String due. Your way Date and Due look like class names.

Upvotes: 0

jordaniac89
jordaniac89

Reputation: 574

It means you're trying to reference an array index that is greater than the actual array size.

Upvotes: 4

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