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Author: AvinandanBose

HashSetDemo21.java

@@ -0,0 +1,21 @@
+import java.util.HashSet;
+
+public class HashSetDemo21 {
+    public static void main(String[] args) {
+        HashSet<String> set = new HashSet<>();
+
+        set.add("A");
+        set.add("a");
+        set.add("B");
+        set.add("b");
+
+        Boolean b = set.isEmpty();
+        System.out.println(b);
+        set.clear();
+        Boolean c = set.isEmpty();
+        System.out.println(c);
+    }
+}
+
+        
+