Rewrite the MyStack class in Listing 11.10 to perform a deep copy of the list field.

Sure, here's the modified version of the MyStack class that performs a deep copy of the list field:

import java.util.ArrayList;

public class MyStack implements Cloneable {
    private ArrayList<Object> list = new ArrayList<>();

    public boolean isEmpty() {
        return list.isEmpty();
    }

    public int getSize() {
        return list.size();
    }

    public Object peek() {
        return list.get(getSize() - 1);
    }

    public Object pop() {
        Object o = list.get(getSize() - 1);
        list.remove(getSize() - 1);
        return o;
    }

    public void push(Object o) {
        list.add(o);
    }

    @Override
    public Object clone() {
        MyStack cloned = new MyStack();
        for (Object o : list) {
            cloned.push(o);
        }
        return cloned;
    }
}

In the clone() method, a new instance of MyStack is created and populated with a deep copy of the original list field. This ensures that any modifications made to the cloned object don't affect the original object.