title: Write a program that will give the use prompt to enter two doubles value
body: <p>Professor requires us to write a program that will give the user prompt to enter two float (or double) values. If the values inputted are correct then display the inputted two values. If user enters characters instead of numbers or if they enter invalid numbers then the program will display the error message and ask the user to re-enter the correct values again. It only exits when the correct input is received and displayed.</p>
  
  <p>However, I wrote a program that will only work if the user input the two right doubles. Can someone helps me to change the line about catching errors? Thanks.</p>
  
  <pre><code>import java.util.Scanner;
  
  public class FiveSecond {
  
      static void printMenu() {
          System.out.println("Welcome to get two doubles program:");
      }
  
      public static void main(String[] args) {
          Scanner scan = new Scanner(System.in);
          boolean valid = false;
          double first = 0;
          double second = 0;
  
          printMenu();
  
          while(!valid) {
              System.out.print("Enter two doubles, seperate by space ");
  
              try {
                  first = Double.parseDouble(scan.next());
                  second = Double.parseDouble(scan.next());
              } catch (NumberFormatException e) {
                  System.out.println("Try again");
              }
  
              valid = true;   
          }
  
          System.out.println("You entered valid choice: " + first + " " +second);
          System.out.println("Thank you for giving your choice.");
  
          scan.close();
      }
  
  }
  </code></pre>