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import java.util.*; public class CollectionsUnmodifiableSortedMapExample1 { public static void main(String[] args) { SortedMap<Integer, Integer> map = new TreeMap<Integer, Integer>(); map.put(1, 1001); map.put(4, 1004); map.put(2, 1002); map.put(3, 1003); System.out.println("Original Map: " + map); SortedMap<Integer, Integer> map2 = Collections.unmodifiableSortedMap(map); map.put(5, 1005); System.out.println("Unmodifiable Sorted Map: " + map2); } }
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