title: What is the proper way of inserting a pipe into a Java Pattern expression?
body: <p>What is the proper way of inserting a pipe into a Java Pattern expression?</p>
  
  <p>I actually want to use a pipe as a delimiter and not the or operator.</p>
  
  <p>I.E:</p>
  
  <pre><code>"hello|world".split("|"); --&gt; {"hello", "world"}
  </code></pre>