Daniel’s Kindle Notes & Highlights

Effective Java, by Joshua Bloch

// Mixing generics and varargs can violate type safety! static void dangerous(List<String>... stringLists) { List<Integer> intList = List.of(42); Object[] objects = stringLists; objects[0] = intList; // Heap pollution String s = stringLists[0].get(0); // ClassCastException }