title: Free java data visualization library?
body: <p>I'm looking for a free Java library to visualize some data. I want to do something similar as the following two images. Is there any possibility? I first thought of prefuse, but this isn't developed since 2007. So any oher libraries?</p>
  
  <p><img src="https://i.stack.imgur.com/VyhUr.png" alt="enter image description here"></p>
  
  <p><img src="https://i.stack.imgur.com/MmJ8l.jpg" alt="enter image description here"></p>