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Author: AvinandanBose

HashSetDemo22.java

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+package TreeSet;
+import java.util.HashSet;
+
+public class HashSetDemo22 {
+    public static void main(String[] args) {
+        HashSet<String> set = new HashSet<>();
+        HashSet<String> set1 = new HashSet<>();
+
+        set.add("A");
+        set.add("a");
+        set.add("B");
+        set.add("b");
+        set1.add("A");
+        set1.add("a");
+        set1.add("B");
+        set1.add("b");
+
+       boolean b = set1.equals(set);
+         System.out.println(b);
+    }
+}

HashSetDemo23.java

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+package TreeSet;
+
+import java.util.HashSet;
+
+public class HashSetDemo23 {
+    public static void main(String[] args) {
+        HashSet<String> set = new HashSet<>();
+
+        set.add("A");
+        set.add("a");
+        set.add("B");
+        set.add("b");
+
+        String s = set.toString();
+        System.out.println(s);
+    }
+
+}

HashSetDemo24.java

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+package TreeSet;
+
+import java.util.HashSet;
+public class HashSetDemo24 {
+    public static void main(String[] args) {
+        HashSet<String> set = new HashSet<>();
+
+        set.add("A");
+        set.add("a");
+        set.add("B");
+        set.add("b");
+
+         set.hashCode();
+
+        System.out.println(set.hashCode());
+
+        set.forEach(i -> System.out.println(i.hashCode()) );
+    }
+
+
+    }
+