What is a mutator in java?

Answer 1

A Java method that changes the state of an object is called a mutator. Mutators typically do not return a result (are declared to return void), although some mutators both change state and return a result (e.g., nextToken in StringTokenizer). Mutators just change state, without looking at current values, are often call "setters", and their names often start with set. In computer science, a mutator method is a method used to control changes to a variable.

Answer 2

A Mutator Function is one that modifies any variable or object that is part of the class.

Ex:

public setName(string newName){

this.name = newName

}

The above is a mutator method that modifies the class variable "name"