title: Checking if user entered nothing or string instead of Integer
body: <p>How would I go about validating a user entered an Integer and not Nothing. The user must enter something into the editText and it must a be an integer. How do I go about validating it.</p>
  
  <p>I have this:</p>
  
  <pre><code>int age = Integer.parseInt(editAge.getText().toString());
  
  if(editAge.getText().toString().equals("")){
        Toast messsage please try again
  }else they are good to go
  </code></pre>
  
  <p>I do not know how to test if the edit text is blank or a string is entered</p>