How to start spring-boot application from another java application or program?

I am not familiar with spring boot but I have a requirement to use it. I am working on a project which has many existing modules. I am writing a thread which starts or calls those mudules everyday in a given time. I found a module which was developed in spring boot.

Since there are many modules which should start/call in certain time I started all application except spring boot application.

I can run spring boot application independently because it has main method but when I called it's main class from another program it is not initilizing application.prooerties files. I mean not initilizing spring boot.

Example:

1. MyThread started...
2. I tried to start spring boot application calling Application.start()

I renamed its main(...) method to start() :)

Any idea will be greatly appreciated. Thanks.