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Thread: Invoke methods

  1. #1
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    Default Invoke methods

    Hi,
    Im making a simple menu style interface. Ive got a class RegistryInterface which creates the interface menu and then a class RegistryApp with a main method to initiate it.
    My problem is i have the main menu public void doMenu, within this i have options where a user enters a number 1-4 and are then taken to the chosen menu option they decide.
    Below is the basic layout of it, if a user enters 1 then i want to invoke the method doAddStudent. I know how to store the value entered by the user etc i just need to know how i would invoke the doAddStudent method from inside the doMenu method.
    Thanks for the help.
    public class RegistryInterface
    {
        private Registry aRegistry = null;
     
        public RegistryInterface(Registry aRegistry)
        {
     
        }
     
        public void doMenu(Registry theRegistry)
        {
            System.out.println("Registry Main Menu");
            System.out.println("******************");
            System.out.println("1. Add a Student");
            System.out.println("2. Delete a Student");
            System.out.println("3. Print Registry");
            System.out.println("4. Quit");
            System.out.print("\nSelect option [1, 2, 3, 4] :> ");
     
     
        }
     
        private void doAddStudent()
        {
     
        }
     
        private void doDeleteStudent()
        {
     
        }
    }


  2. #2
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    Default Re: Invoke methods

    Quote Originally Posted by wdh View Post
    Hi,
    Im making a simple menu style interface. Ive got a class RegistryInterface which creates the interface menu and then a class RegistryApp with a main method to initiate it.
    My problem is i have the main menu public void doMenu, within this i have options where a user enters a number 1-4 and are then taken to the chosen menu option they decide.
    Below is the basic layout of it, if a user enters 1 then i want to invoke the method doAddStudent. I know how to store the value entered by the user etc i just need to know how i would invoke the doAddStudent method from inside the doMenu method.
    Thanks for the help.
    Hello wdh!
    Since doMenu() and doAddStudent() are in the same class you can simply call one from the other directly
    public void doMenu(Registry theRegistry)
        {
            System.out.println("Registry Main Menu");
            System.out.println("******************");
            System.out.println("1. Add a Student");
            System.out.println("2. Delete a Student");
            System.out.println("3. Print Registry");
            System.out.println("4. Quit");
            System.out.print("\nSelect option [1, 2, 3, 4] :> ");
     
            //if user enters 1
            doAddStudent();
     
        }
    If you have another problem, please explain it.

  3. #3
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    Default Re: Invoke methods

    Ok, so you said you know how to store the answer the user gave? Next you want to do a serious of conditional statements (if/else). If the answer the user gave is 1, then call the doAddStudent() method, if the answer is 2, call the doDeleteStudent() method, ect.
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    Default Re: Invoke methods

    Hi, i sorted the problem in the end, doAddStudent() is all i needed, i didnt realise it was that simple calling from the same class. Thanks anyway!

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