[vision_slr]

Instantiating a Member object would depend on the constructors available.

Here's an example of instantiating a Member if it has a default constructor (no arguments)

public void memberRegister(String newName, String newId, int newPinNumber)
    {
        
        String name = newName;
        String id = newId;
        int pinNumber = newPinNumber;
        Member member = new Member();
        member.welcomeMessage(name, id, storeName);
    }

Here's the Java trail on constructors for your reference:
http://docs.oracle.com/javase/tutori...structors.html