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// onjava/Stack.java

// (c)2017 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<T> {

private Deque<T> 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();

}

}