Cmd after shutting himself __java

Next source bar, today need to see the Java class after the results of the luyten.exe, down a single, then double-click to run, error, said the need for 1.7~1.8 JRE,
Want to have 1.8 jdk, set path, still not ...
Download Luyten source code, compiled, get the jar to run, see the source of the start class, incredibly can command line to start, with the following CMD

Javaw-jar "D:\learning\openLearn\Luyten\target\luyten-0.5.0.jar"

Found that can start decompile, the efficiency of the new computer is very high, and then found that the cmd window is still in, until the Luyten main window is closed.
After the search with the following code

Start Javaw-jar "D:\learning\openLearn\Luyten\target\luyten-0.5.0.jar"

Nice is perfect,