java - check String contents
<p>I need to perform the following check:</p>

<p>IF myString.contains() </p>

<p>ANY CHARACTERS OTHER THAN</p>

<p>letters a-z, A-Z, "_", "-", numbers 0-9</p>

<p>THEN .....</p>

<p>whats is the correct java syntax for such a check?</p>
