Running batch file in java

Question

I am trying to run a batch file using java. The batch file in turn runs a python program. So i should wait till the batch file is done and then proceed with my program.

Problems facing:

1. I could not run batch file in background. I am able to run it only via start

   Process p = Runtime.getRuntime().exec("cmd /c start c://GCTI//IA/QAART//testercheck.bat");

2. once the batch file ran, it is not closing automatically.

Batch file

"C:\Python27\python.exe" -i "C:\GCTI\IA\QAART\tester\test_monitor.py" -init "C:\GCTI\IA\EpiPhone\Dispatcher6\init\INIT_Designer_QAART_Dispatcher_Chat.PY" -testlist "C:\GCTI\IA\ASR_QAART\dat files\ChatAutomation\chat.dat" 23

Can you please help me to run this batch ile in background?

Answer 1

You don't need the batch file. You can execute the Python program directly from Java code using class java.lang.ProcessBuilder .

ProcessBuilder pb = new ProcessBuilder("C:\\Python27\\python.exe",
                                       "-i",
                                       "C:\\GCTI\\IA\QAART\\tester\\test_monitor.py",
                                       "-init",
                                       "C:\\GCTI\\IA\\EpiPhone\\Dispatcher6\\init\\INIT_Designer_QAART_Dispatcher_Chat.PY",
                                       "-testlist",
                                       "C:\\GCTI\\IA\\ASR_QAART\\dat files\\ChatAutomation\\chat.dat",
                                       "23");
Process p = pb.start();
int result = p.waitFor();

Refer to other methods in class ProcessBuilder for handling the output of the Python script, for example method inheritIO