import java.util.*;

public class TestIntStack {

  public static void main(String[] args) {
    int x;
    IntStack stack = new IntStack();

    // push the values 10, 20, 30, 40, 50
    for ( x = 10; x < 60; x=x+10 ) {
      System.out.println("Pushing " + x + ".");
      stack.push(x);
    }

    // display the stack contents
    System.out.println("\nDumpstack:");
    stack.dumpStack();

    // report the top value and pop it
    // ordinarily we would capture the popped value
    while (! stack.isEmpty()) {
      System.out.println("Popping " + stack.peek() + ".");
      stack.pop();
    }

    // try to pop the empty stack
    System.out.println("\nIntentionally popping an empty stack.");
    try {
      x = stack.pop();
    } catch (EmptyStackException e) {
      System.out.println("\nCaught EmptyStackException!");
      System.out.println("We could do some useful work here.");
    }
  }
}