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Author: AvinandanBose

HashSetDemo15k.java

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+import java.util.HashSet;
+import java.util.stream.Stream;
+
+public class HashSetDemo15k {
+
+    public static void main(String[] args) {
+
+        HashSet<Integer> set1 = new HashSet<>();
+        HashSet<String> set2 = new HashSet<>();
+        set1.add(1);
+        set1.add(2);
+        set1.add(3);
+        set1.add(4);
+
+        set2.add("A");
+        set2.add("a");
+        set2.add("B");
+        set2.add("b");
+        set2.add("C");
+        set2.add("c");
+
+        boolean b = set1.stream().isParallel();
+        System.out.println(b);
+        Stream s = set1.parallelStream();
+        boolean c= s.isParallel();
+        System.out.println(c);
+        
+    }
+    
+}

HashSetDemo15l.java

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+import java.util.HashSet;
+
+public class HashSetDemo15l {
+    public static void main(String[] args) {
+
+        HashSet<Integer> set1 = new HashSet<>();
+        HashSet<String> set2 = new HashSet<>();
+        set1.add(1);
+        set1.add(2);
+        set1.add(3);
+        set1.add(4);
+
+        set2.add("A");
+        set2.add("a");
+        set2.add("B");
+        set2.add("b");
+        set2.add("C");
+        set2.add("c");
+
+        set1.stream().findFirst().ifPresent(s -> System.out.println(s));
+         set1.stream().findFirst().ifPresent(System.out::println);
+
+    }
+    
+    
+}

HashSetDemo15m.java

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+import java.util.HashSet;
+
+public class HashSetDemo15m {
+    public static void main(String[] args) {
+
+        HashSet<Integer> set1 = new HashSet<>();
+        HashSet<String> set2 = new HashSet<>();
+        set1.add(1);
+        set1.add(2);
+        set1.add(3);
+        set1.add(4);
+
+        set2.add("A");
+        set2.add("a");
+        set2.add("B");
+        set2.add("b");
+        set2.add("C");
+        set2.add("c");
+
+        set1.stream().filter( e -> (e ==1)).forEach(System.out::println);
+        set2.stream().filter( e -> (e == "A")).forEach(System.out::println);
+        
+
+    }
+
+}