New to Java

This is probably simple but i dont know how to solve

I have class which contains this method, it taks an object p from another class called Person

    
public void addPerson(Person p)
{
        aPerson.add(p);
}

And another method which is a simple menu

public void mainMenu()
    {
         
    // Create Menu Text
    System.out.println(" Main Menu");
    System.out.println("---------------------------------------------");
    System.out.println("Please choose an option by entering the appropriate number:");
    System.out.println("1. Add Person");
    System.out.println("2. Exit");
    
    BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
   
    try{    String menuC = stdIn.readLine();
            int menuChoice = Integer.parseInt(menuC);
    
                // Define Menu Options
                    switch(menuChoice)
                        {
                                case 1: 
                                        addPerson(Person p);    
                                    break;
            
                                case 2:  //** Exit
                                    break;

                        }
        }
    catch ( IOException ioe ) 
        {
        // won't happen too often from the keyboard
        }

        
    }

I want the method addPerson to be called if i type 1, however i get the error ')' expected on the line where i call the method in case 1.
If i take Person p as a parameter for mainMenu and then just call addPerson(p); it works perfectly, however i need it to want the parameter when the addPerson method is called not the mainMenu.

Any help on how to properly call the menu is appreciated.