accessor method and mutator method

Question

public class CashRegister
{
private double purchase;
private double payment;
. . .
}

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which one is an accessor method and a mutator method in this case ?

Answer 1

Accessor" and "Mutator" are just fancy names for getters and a setters. A getter, "Accessor", returns a class's variable or its value.

Answer 2

They are the methods not variables

Answer 3

so whiche one i sa getter and which one is setter in this case?