title: java.lang.NullPointerException
body: <p>I do a condition with a value when it is null and when it is not null.
  The time where this value is null I got the <code>java.lang.NullPointerException</code>.</p>
  <p>How could I deal with this in order to dismiss this exception?</p>
  <p>I need the condition when the value is null and when it is not.</p>