title: convert string to arraylist <Character> in java
body: <p>How to convert a String without separator to an <code>ArrayList&lt;Character&gt;</code>.</p>
  
  <p>My String is like this:</p>
  
  <pre><code>String str = "abcd..."
  </code></pre>
  
  <p>I know one way of doing this is converting the String to <code>char[]</code> first, and then convert the <code>char []</code> to <code>ArrayList &lt;Character&gt;</code>.</p>
  
  <p>Is there any better way to do this? like converting directly? Considering time and performance, because I am coding with a big database.</p>