method swap to the Pair class of that swaps the first and second elements value of the pair in generic Pair class in java 1

method swap to the Pair class of that swaps the first and second elements value of the pair in generic Pair class in java

public class PairDemo
{
   public static void main(String[] args)
   {
      String[] names = { "Tom", "Diana", "Harry" };
      Pair result = firstContaining(names, "a");
      System.out.println(result.getFirst());
      System.out.println("Expected: Diana");
      System.out.println(result.getSecond());
      System.out.println("Expected: 1");
      swap();
   }


   public static Pair firstContaining(
      String[] strings, String sub)
   {
      for (int i = 0; i < strings.length; i++)
      {
         if (strings[i].contains(sub))
         {
            return new Pair(strings[i], i);
         }
      }
      return new Pair(null, -1);
   }
}

Here is what the above code is Doing:
1. It creates an array of strings.
2. It calls the firstContaining method, passing the array and the string “a”.
3. The firstContaining method loops through the array, looking for a string that contains the substring “a”.
4. When it finds one, it returns a Pair object containing the string and its index.
5. The main method prints the string and its index.

The firstContaining method returns a Pair object. The Pair class is generic.
The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type parameters are String and Integer.

The firstContaining method returns a Pair object containing the string and its index.
The Pair class is generic. The type

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