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import java.util.*; public class CollectionsCheckedQueueExample3 { public static void main(String[] args) { Queue<Integer> queue = new PriorityQueue<>(); queue = Collections.checkedQueue(queue, Integer.class); queue.offer(1); queue.offer(2); queue.offer(5); System.out.println("\n"+queue); Queue queue2 = queue; queue2.offer("Four"); System.out.println(queue2); } }
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