import java.util.Stack;
public class DemoStack3 {
public static void main(String[] args) {
System.out.println("Demo de Stack");
Stack<Character> miPila = new Stack<Character>();
miPila.push('a');
miPila.push('b');
miPila.push('c');
System.out.println(miPila.pop());
System.out.println(miPila.pop());
System.out.println(miPila.pop());
try {
System.out.println(miPila.peek());
} catch (Exception e){
System.out.println(e.getMessage());
}
}
}
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