Question

Write a program HelloPrinter that switches the letters "e" and "o" in a string. Use the replace method repeatedly. Demonstrate that the string " Hello", world!" turns into " Holle, werld!"

Answer 1

Answer:

public class Printing

{

       public static void main(String[] args)

         {

            String letters = "Hello, World!";

            String letters2 = letters.replace("o" , "e");

            String letters3 = letters.replace("e" , "o");

            System.out.println(letters3);

          }

}

Explanation:

We start by defining a class called Printing. We take a string variable to store "Hello, World!";. Then we use replace method 2 times to switch the letters "e" and "o".  Finally we print the last String variable where the latest replacement is stored.