CODEWITHSUNDEEP
java
Shaily
Shaily

Reputation: 31

Arrays Help Work Shown

public class Month {

    static String months[];

    public static void main(String[] args) {
        // TODO code application logic here
        months = new String[13];
        months[0] = "null";
        months[1] = "january";
        months[2] = "february";
        months[3] = "march";
        months[4] = "april";
        months[5] = "may";
        months[6] = "june";
        months[7] = "july";
        months[8] = "august";
        months[9] = "september";
        months[10] = "october";
        months[11] = "november";
        months[12] = "december";
        System.out.println("enter number:");
        int a = Integer.parseInt(args[0]);
    System.out.println(a);
    } 
}

I have to get userinput for the month number and output the month name. Can someone please tell me why I keep getting an error at

int a = Integer.parseInt(args[0]);

Here is the error:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
at Month.main(Month.java:22)

Thanks

Upvotes: 2

Views: 40

Answers (2)

elias
elias

Reputation: 849

You ask the user to enter a number, but don't use it for anything. You pass the first argument of the main function to the parseInt call, this causes the error you get.

Upvotes: 0

libik
libik

Reputation: 23029

For user input, you want to use this :

    System.out.println("enter number:");
    Scanner input = new Scanner(System.in);
    int a = input.nextInt();

Also remember, to add import java.util.Scanner; to the top of your file, just below the package line

Args are arguments, you have to run them with the program from command line or add it in Run section of your IDE as arguments.

Upvotes: 3

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