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import java.util.ArrayList; public class ArrayListRemoveAllExample2 { ArrayList<String> letters = new ArrayList<>(); letters.add("A"); letters.add("B"); letters.add("C"); letters.add("D"); System.out.println(letters); // [A, B, C, D] ArrayList<Integer> numbers = new ArrayList<>(); numbers.add(1); numbers.add(2); letters.removeAll(numbers); // throw ClassCastException }
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