title: jackson arraynode
body: <p>I have a input json object that contains a array as shown below:</p>
  
  <pre><code>[{"key11":"value11","key12":"value12"},
  {"key21":"value21","key22":"value22"},
  ...
  {"keyn1":"valuen1","keyn2":"valuen2"}]
  </code></pre>
  
  <p>I would like to use jackson parser ,firstly, to identify the number of rows and secondly, print only the values on the screen. I want it to be as lightweight as possible. Can anyone point me to a direction?</p>