Need assistance with writing this program in Java, please. Write an executable p

Question

Need assistance with writing this program in Java, please.

Write an executable program that has just a main method.
In main:

create an instance of StringBuilder that initially holds an empty string.

append your first name to the string.

append your surname to the string.

display your name.

insert your middle initial where it should be and spaces as needed. If you don't have a middle name, fake it.

display your name with middle initial.

delete your initial and the space(s).

display your name in reverse order.

SAMPLE OUTPUT

John Public
John Q Public
cilbuP nhoJ

Explanation / Answer

// Provided the main function for the program

public static void main(String args[]){
       StringBuilder sb=new StringBuilder("");
   Scanner in = new Scanner(System.in);
   System.out.println("Enter first name");
   String firstName = in.nextLine();
  
   System.out.println("Enter Sur name");
   String surName = in.nextLine();
   sb.append(firstName).append(" ").append(surName);
   System.out.println(sb);
  
   String middleName;
       System.out.println("Enter the middle Name");
       middleName = in.nextLine();
  
       if(middleName.isEmpty()){
           // let's fake the middle name
           middleName = "Q";
       }
      
     
  
   // Now we have to find index of first " " in sb.
   int index = sb.indexOf(" ");
   // Now insert middle name there
  
   sb.insert(index, " " + middleName);
   System.out.println(sb);
  
   System.out.println(sb.reverse());
  
  
      
   }

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