Java Program crashing when launch from Matlab 2019a

I have a java program (.jar file) that i wish to run from Matlab 2019a.

As far as launching it goes it goes seemingly smoothly, When i click the button to launch it, it takes about 5-7 seconds and then launches fine.

From there i can navigate the program fine and some functionality of the program does infact work. Its just when i click on a certain button of the program it starts to load forever

When the program is launched from the command line it works perfectly and the same button performs near instantaneously

I just want to know where the problem could lie. Should i look more into the java program to find out what that function does differently than other functions that work with Matlab 2019a or could the issue lie with how i launch the program from Matlab. I launch it with this command:

fullpath = mfilename('fullpath')
javacmd = ['START "" /B "C:\Program Files\Java\jdk1.8.0_361\bin\java.exe" -Djna.library.path="C:\bit9prog\dev\app1\Project1\bin;" -jar ' fullpath '\..\..' '\java\Project1\target\Project1.jar'];
dos_cmd = sprintf('%s %s %s %s', javacmd, pwd);
system(dos_cmd);

If i need to give more background information for clarity do let me know

[Don Ellison]

Also if anyone knows how to get output from the java program when launched from matlab it would be very helpful

For instance when launched from my terminal i use

>> Output.txt

To save all System.out.println()'s to a file called output.txt created by the program. However im not seeming to get much success from trying to include that line of code in my MATLAB launch code above but i could be inputting it wrong