Is the following implementation of testPopEmpty() equivalent to that shown in Listing 6.2?

Question

```
1 public void testPopEmpty() {
2 Stack s = new ListStack();
3
4 try {
5 s.pop();
6 fail("testPopEmpty EmptyStackException expected");
7 } catch ( EmptyStackException ex ) {
8 return; // this is what we expect
9 }
10 }

```

Answer 1

They are equivalent. If s.pop() does throw an exception as expected, the fail() method call will not execute as the catch block is immediately invoked. fail() will only be called if s.pop() does not throw an exception.