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HashSet16.java

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+//16. write a java code to demonstrate HashSet
+import java.util.*;
+public class HashSet16
+{
+	public static void main(String[] args)
+	{
+		HashSet<String> drinks = new HashSet<String>();
+		drinks.add("Cranberry Juice");
+		drinks.add("Mango Lassi");
+		drinks.add("Cranberry Juice");
+		drinks.add("Mixed fruit Juice");
+
+		Iterator<String> itr = drinks.iterator();
+		while(itr.hasNext())
+		{
+			System.out.println(itr.next());
+		}
+	}
+}

LinkedHashSet17a.java

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+//17. write a java code to demonmstrate LinkedHashSet A
+import java.util.*;
+public class LinkedHashSet17a
+{
+	public static void main(String[] args)
+	{
+		LinkedHashSet<String> sweets = new LinkedHashSet<String>();
+		sweets.add("Kaju Katli");
+		sweets.add("Gulab Jamun");
+		sweets.add("Aflatoon");
+		sweets.add("Gajar Halwa");
+		sweets.add("Kaju Katli");
+		Iterator<String> itr = sweets.iterator();
+		while(itr.hasNext())
+		{
+			System.out.println(itr.next());
+		}
+
+	}
+}
+
+

LinkedHashSet17b.java

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+//program 17b
+import java.util.*;
+public class LinkedHashSet17b
+{
+	public static void main(String[] args)
+	{
+		LinkedHashSet<String> sweets = new LinkedHashSet<String>();
+		sweets.add("Kaju Katli");
+		sweets.add("Gulab Jamun");
+		sweets.add("");
+		sweets.add("Gajar Halwa");
+		sweets.add("Kaju Katli");
+		Iterator<String> itr = sweets.iterator();
+		while(itr.hasNext())
+		{
+			System.out.println(itr.next());
+		}
+
+	}
+}

LinkedHashSet17c.java

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+//program 17c
+import java.util.*;
+public class LinkedHashSet17c
+{
+	public static void main(String[] args)
+	{
+		LinkedHashSet<String> sweets = new LinkedHashSet<String>();
+		sweets.add("Kaju Katli");
+		sweets.add("Gulab Jamun");
+		sweets.add("null");
+		sweets.add("Gajar Halwa");
+		sweets.add("Kaju Katli");
+		Iterator<String> itr = sweets.iterator();
+		while(itr.hasNext())
+		{
+			System.out.println(itr.next());
+		}
+
+	}
+}

Stack15.java

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+//15. write a java code to demonstrate stack
+import java.util.*;
+public class Stack15
+{
+	public static void main(String[] args)
+	{
+		Stack<String> food = new Stack<String>();
+		food.push("Butter Chicken");
+		food.push("Dal Makhani");
+		food.push("Kadhai Paneer");
+		food.push("Prawns Koliwada");
+		food.push("Crab Soup");
+		Iterator<String> itr = food.iterator();
+		while(itr.hasNext());
+		{
+			System.out.println(itr.next());
+		}
+		String Food = food.peek();
+		System.out.println("The Top food item is: " +food);
+
+		food.pop();
+		System.out.println("After Pop:");
+		Iterator<String> newItr = food.iterator();
+		while(newItr.hasNext());
+		{
+			System.out.println(newItr.next());
+		}
+	}
+}
+
+