title: How do I output an error message for a non-numeric input?
body: <p>new programmer here.</p>
  
  <p>Just a quick question - as mentioned already in the Title:</p>
  
  <p>How do I output an error message for a non-numeric input ?</p>
  
  <p>Example, person enters a letter for an int classified input - the compiler produces an error of: "Exception in thread "main" java.util.InputMismatchException"</p>
  
  <p>How do I actually make it output an error message within the program itself?</p>
  
  <p>Cause I'm wanting the program to keep looping to request an input again til a specified requirement has been met to exit the program.</p>