public class ReplacementTester
{
   public static void main(String[] args)
   {
      String greeting = "Hello, elite hacker!";
      // your work here 
      // call the replace method four times
      String modifiedGreeting;
     modifiedGreeting=greeting.replace('e','3');
     modifiedGreeting=modifiedGreeting.replace('i','1');
     modifiedGreeting=modifiedGreeting.replace('l','7');
     modifiedGreeting=modifiedGreeting.replace('o','0');
     
      System.out.println(modifiedGreeting);
      System.out.println("Expected: H3770, 371t3 hack3r!");
   }
}