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package myPackage; import java.util.*; public class CollectionsSingletonMapExample4 { public static void main(String[] args) { Map<Integer, String> m1 = new HashMap<Integer, String>(); m1.put(1, "Sunday"); m1.put(2, "Monday"); m1.put(3, "Tuesday"); m1.put(4, "Wednesday"); System.out.println("Before Singleton method-"); System.out.println("Contents of the Map Elements"); System.out.print( m1); System.out.println("\n"); System.out.println("After singleton method-"); m1 = Collections.singletonMap(1, "Monday"); System.out.println("Contents of the Map Elements"); System.out.println(m1); } }
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