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Thread: int from main method to non-static method

  1. #1
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    Default int from main method to non-static method

    I'm working on a school assignment, and I've hit a wall in my code where I can't get my Int and double from my main method to my nonstatic method. in the one instance where I did manage to get no errors and everything looked correct, nothing happened and it was as if I had done nothing at all.
    My code:
    ```
    import java.util.Scanner;
    public class VendingChange {
    /**
    * Vending extra credit
    * by:
    *
    * Requirements:
    * 1) The program must use Scanner in order to grab what the user types in
    * 2) You must have at least 2 methods, one static, and one non-static
    * 3) The main method should be used to ask the user for the price of the item and the non-static method should be used to calculate the amount of change and to print the results.
    * 4) Make sure you have a javadoc and single line comments throughout the program
    *
    */
    public static void main (String[] args){
    Scanner check = new Scanner(System.in);// import of the scanner
    char cents = '\u00a2';//Unicode of cent symbol
    System.out.print("Your item costs (25" + cents + " minimum, Increments of 5" + cents + "): ");
    Double price = check.nextDouble(); //price of the item
    System.out.println("You paid (whole dollars only): ");
    int paid = check.nextInt(); //amount paid
    VendingChange newVend = new VendingChange();//creates a copy of the class
    newVend.Secondary();// calls the nonstatic
    }
    public static void trianary(){
    main(null);

    }
    public void Secondary () {
    System.out.println("your change is " );
    }
    }
    ```
    I can't figure out how I'm supposed to connect my methods.

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: int from main method to non-static method

    Are you getting compiler error messages? Please copy the full text and paste it here.

    how I'm supposed to connect my methods.
    To call a method in a class, create an instance of the class and use the reference to that instance to call the method.
    Scanner check = new Scanner(System.in);// create instance of Scanner class
     ...
    Double price = check.nextDouble(); // call a method in the Scanner class


    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: int from main method to non-static method

    learn about method parameters

        newVend.Secondary( price, paid);
      }
      public void Secondary( Double price, int paid) {
        System.out.println("price is " +price);
        System.out.println("paid "  +paid);
      }
    Last edited by zemiak; January 5th, 2022 at 08:43 AM. Reason: typo

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