n class="identifier">filterDigits</span></a>(<span style="white-space:nowrap">Input:<a class="type" title="String - The basic String class." href="../../String.html">String</a></span>):<a class="type" title="String - The basic String class." href="../../String.html">String</a></code></h3><div class="doc"><p>Takes a string and filters out everything but the digits.</p><p class="javadoc">Parameters:</p><table class="table table-bordered params"><tr><th style="width:25%;"><code>Input</code></th><td><p>The inpu