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Author: AvinandanBose

EnumSetDemo.java

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+package EnumSet;
+
+import java.util.EnumSet;
+import java.util.HashSet;
+import java.util.TreeSet;
+
+enum Days {
+    SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY;
+}
+
+enum Months {
+    JANUARY, FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST, SEPTEMBER, OCTOBER, NOVEMBER, DECEMBER;
+}
+public class EnumSetDemo {
+
+    
+    
+    public static void main(String[] args) {
+        EnumSet<Days> set1 = EnumSet.allOf(Days.class);
+        HashSet<Months> set2 = new HashSet<>();
+        TreeSet<Days> set3 = new TreeSet<>();
+        set2.add(Months.JANUARY);
+        set3.addAll(set1);
+        System.out.println(set2);
+        System.out.println(set3);
+
+        
+    }
+}
+
+