Calling BASH script from JAVA

Hi,

I am trying to call a bash script from a java file.

Code to call bash script will look like:

Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec("mybashfile.sh");

It is succesfully calling the bash file.

I am using simple rm commands in the script to remove files and directories and it is removing those correctly.

But, when i use sleep between the rm commands, files and directories are not getting removed.

I am new to Linux. Please tell me what should i do