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Thread: Array question

  1. #1
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    Default Array question

    I'm kind of ashamed to ask this question but can anybody tell me how I can print a particular value of the array in the main method? how do I print x[2], for example. Thanks.

    package pkgreturn;
     
    public class Return {
     
        public static void main(String args[]) {
     
     
        }
     
        public static int[] returnVal() {
            int x[] = {45, 8, 6, 5};
            return x;
     
        }
    }


  2. #2
    Super Moderator pbrockway2's Avatar
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    Default Re: Array question

    how I can print a particular value of the array in the main method? how do I print x[2]
    You have to do two things: first get the array that returnVal() returns. This involves calling the method and assigning what it returns to a variable. There is no particular reason for that variable to be called x although it can be.

    Secondly you print the element of the array you are interested in.

    These two steps would be:

        public static void main(String[] args) {
            int[] arr = returnVal();
            System.out.println(arr[2]);
        }

    "int[] arr" and "int arr[]" mean the same thing, but I think the former is clearer: whether declaring variables, method arguments, or the return type of methods (where I don't think I have ever seen the other form used).

    These steps can be combined if that's sensible:

    public static void main(String[] args) {
        System.out.println(returnVal()[2]);
    }
    Last edited by pbrockway2; April 6th, 2012 at 11:58 PM.

  3. #3
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    Default Re: Array question

    Quote Originally Posted by pbrockway2 View Post
    You have to do two things: first get the array that returnVal() returns. This involves calling the method and assigning what it returns to a variable. There is no particular reason for that variable to be called x although it can be.

    Secondly you print the element of the array you are interested in.

    These two steps would be:

        public static void main(String[] args) {
            int[] arr = returnVal();
            System.out.println(arr[2]);
        }

    "int[] arr" and "int arr[]" mean the same thing, but I think the former is clearer: whether declaring variables, method arguments, or the return type of methods (where I don't think I have ever seen the other form used).

    These steps can be combined if that's sensible:

    public static void main(String[] args) {
        System.out.println(returnVal()[2]);
    }
    Hello pbrockway2, thanks a lot for your answer.

    I was ashamed to ask because I knew how to do this in the past, but I totally forgot you need the '[]' next to the method to retrieve the value. For some reason I was typing a dot between returnVal() and x[3] , instead of 'returnVal()[2]'.

    Thanks

  4. #4
    Super Moderator pbrockway2's Avatar
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    Default Re: Array question

    You're welcome.

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