How can we assert that a certain Exception is thrown in JUnit 4 tests

Question

How can we use JUnit 4 to test whether some code throws an Exception or not?

Answer 1

@Test(expected = IndexOutOfBoundsException.class)
public void testIndexOutOfBoundsException() {
    ArrayList emptyList = new ArrayList();
    Object o = emptyList.get(0);
}

Answer 2

@Test(expected = IndexOutOfBoundsException.class)
public void testIndexOutOfBoundsException() {
    ArrayList emptyList = new ArrayList();
    Object o = emptyList.get(0);
}