If you already learned something get benefitted from it then you can think to change the career path after joining and day by day be master at these or those.

You’ve already completed .net training and I think you should focus on finding jobs in .net. Frankly speaking, you will get a job based on how good you are at one technology; not how many you are ‘exposed’ to.

https://www.crazyengineers.com/threads/java-or-net-which-is-better-for-future-career.73827/page-2