@Test public void size() throws Exception { assertThat(new IntStack(4).size(), is(0)); }
public int size() { return n; }
IntStack { public int size() { return n; } }
IntStack { public int size() { return n; } IntStack(final int n); }
IntStack { public int size() { return n; } IntStack(final int n); int size(); void clear(); }
IntStack { public int size() { return n; } IntStack(final int n); int size(); void clear();  }