Example of the output.  Notice the NoSuchElementException, and Scanner.

This is a result of the student instantiating multiple Scanner objects.  Submit can only accept one Scanner for System.in.  See main below for the cause.

<--- Test 01: input data follows (WITHOUT line numbers) --->
1234567.00
James Madison
<--- Test 01: correct output follows (WITH line numbers)--->
    1 Welcome to the Harrisonburg Property Tax Calculator
    2 
    3 Enter the assessed value of the property: 
    4 Enter the property owner's name: 
    5 James Madison
    6    Taxes on $1,234,567.00 are $7,284.14.
<--- Test 01: your incorrect output follows (WITH line numbers)--->
    1 Welcome to the Harrisonburg Property Tax Calculator
    2 
    3 Enter the assessed value of the property: 
    4 Enter the property owner's name: 
<--- First difference after line 4, char 0: Expected='J', Observed=EOF. --->
<--- Test 01: your err-output follows (WITH line numbers) --->
    1 Exception in thread "main" java.util.NoSuchElementException: No line found
    2    at java.util.Scanner.nextLine(Scanner.java:1516)
    3    at HarrisonburgTax.main(HarrisonburgTax.java:38)
<-------------------------------->

 13	   public static void main(String[] args)
   14	   {
   15	      //declarations of variables
   16	      double tax; 
   17	      double propertyValue;
   18	      String greeting;
   19	      String userName;
   20	      DecimalFormat taxFormat;
   21	      final double rate = .59;
   22	      
   23	      greeting = "Welcome to the Harrisonburg Property " 
   24	         + "Tax Calculator\n" ;
   25	         
   26	      System.out.println(greeting);
   27	      
   28	      Scanner keyboard;
   29	      
   30	      //This code block takes in the property value
   31	      keyboard = new Scanner(System.in);
   32	      System.out.print("Enter the assessed value of the property: ");
   33	      propertyValue = keyboard.nextDouble();
   34	      
   35	      //Now the program collects the user's name
   36	      keyboard = new Scanner(System.in);
   37	      System.out.print("\nEnter the property owner's name: \n");
   38	      userName = keyboard.nextLine();
   39	      
   40	      taxFormat = new DecimalFormat("$#0.00");
   41	      tax = rate * (propertyValue / 100);
   42	      
   43	      System.out.println(userName);
   44	      System.out.println("   Taxes on " + taxFormat.format(propertyValue) + 
   45	      " are " + taxFormat.format(tax)  + ".");
   46	   }
   47	}