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import java.util.*; public class CollectionsUnmodifiableListExample3 { public static void main(String[] args) { ArrayList<Integer> list = new ArrayList<>(); list.add(10); list.add(20); list.add(30); list.add(40); List<Integer> list2 = Collections.unmodifiableList(list); System.out.println("Unmodifiable list: " + list2); list.add(50); System.out.println("Unmodifiable list after adding (50): "+list); } }
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