Best Programming Language for a Desktop programme.

So I have been using Java for sometime mostly on server side development. Recently, I built a POS system to run on windows. I used Swing for UI. As much as I got it to work, It's a lot of trouble to do even the simplest things. Coming from web app and mobile development, doing the slightest things like aligning items to the right is a nightmare and takes a good couple of hours with Java. I was hoping to use Java to build a high intensive , super sophiscated software but with it's current state I will never complete it using Java. What language can I use to build a program without going crazy. My program somehow functions like Winautomation. I would love to know the language that was used to build it