title: Is there any tool to make complex GUI easily which supports java to code the logic
body: <p>I have tried Swing and it is really a very tough task to build modern GUIs of following kind 
  <img src="https://i.stack.imgur.com/23TXV.png" alt="enter image description here"></p>
  
  <p>But at the same time It would be good to keep java alongwith for the logical part as Java has a lot to offer like JAXP and other add-on APIs.
  Tools like WindowBuilder or other JavaGUI Builder though make the task easy but still crappy GUI.</p>
  
  <p>I wanted to know,if there is any tool that provides such good GUI and also supports java.</p>
  
  <p>If not available,what those guys at Windows App Store or Android App store use to develop such kind of apps with such a nice GUI.</p>
  
  <p>(I am a tyro to GUIs and doesn't know the hacks or tools they use.It would be helpful if you just touch those points/techniques to give an idea).
  Please do not downvote.Its a dream project.</p>