In Java I need to create a simple program that reverses any line of a String using .split method and StringBuilder. We are instructed to use a while loop and was given the hint that it should be done in only 5 lines of code. I posted below what I have, I can't figure out how to implement a while loop using the stringbuilders reverse method to then print out the correct output.

import java.util.Scanner;

public class ReverseAnything{

public static void main(String[] args) {

// Setup a scanner object, and receive user's input

Scanner in = new Scanner(System.in);

System.out.print("Provide an input sentence: ");

String userInput = in.nextLine();

// Step 1: use a split method on the String userInput.

// The argument the split method should be the delimeter " "

//

// Step 1 can be completed in a single line of code.

userInput.split(" ");

System.out.print("The output sentence is : ");

StringBuilder sb = new StringBuilder(userInput);