How to use private class variable using interface implemented in a different class

Question

Food is a standalone class, doesn't inherits from anything.

public class Food {
    private String name;

    public Food() {}
                
    public Food(String Name) {
        this.name = Name;
    }
                
    public String getName() {
        return this.name;
    }
                
    public void setName(String name) {
        this.name = name;
    } }

Below is the interface:

 public interface Eater{ public void eat(Food food); }

How can i use the interface in Person class (see below) to access private variable name from Food class?

Here is what I am trying to do by creating an object explicitly :

public class Person implements Eater {
    public String foodName;
        
    public void eat(Food food) {
        Food testFood = new Food();
        this.foodName = testFood.getName();
    }
}

But how can i do something like that without creating an object explicitly ? Because I want this method to work for every instanced of Food .

Answer 1

Just call getName on the food parameter.

public class Person implements Eater {
    public String foodName;
        
    public void eat(Food food) {
        this.foodName = food.getName();
    }
}