// onjava/Stack.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// A Stack class built with an ArrayDeque
package onjava;
import java.util.Deque;
import java.util.ArrayDeque;

public class Stack {
  private Deque storage = new ArrayDeque();
  public void push(T v) { storage.push(v); }
  public T peek() { return storage.peek(); }
  public T pop() { return storage.pop(); }
  public boolean isEmpty() { return storage.isEmpty(); }
  @Override public String toString() {
    return storage.toString();
  }
}