Java中的子批处理文件退出代码

Question

I have a batch file A which is called in a java program with Process process = new ProcessBuilder("...").start() .

And the batch file A calls another batch file B. In my case, B's exit code is different from A's exit code since B could fail from time to time. My problem here is that in the java program, I cannot seem to possibly get the exit code of B by any means. I wonder if there's a way to achieve what I want.

Answer 1

Batch A.bat calls B.bat
Batch B.bat will return a random errorlevel 0/1
Batch A will handover the same erorlevel to the caller/console

:: A.bat
@Echo off
Echo about to call B.bat
Call B.bat
Echo Back in A.bat Errorlevel=%Errorlevel%=
Exit /B %Errorlevel%

---

:: B.bat
@Echo off
Echo this is B.bat
Set /A "RandErr=%Random% %% 2"
Echo Exit /B %RandErr%
     Exit /B %RandErr%

Sample run:

> a
about to call B.bat
this is B.bat
Exit /B 0
Back in A.bat Errorlevel=0=

> a
about to call B.bat
this is B.bat
Exit /B 1
Back in A.bat Errorlevel=1=