How to Wait till all files are deleted by my java function?

Question

I am having a problem.
I have a function to remove some files and then reboot the system. It contains a lot of files, so before the whole set of files are getting deleted, my reboot command is getting executed.

How can I solve this in my Java code.

To delete the files, I am using:

Runtime.exec("/bin/rm -rf /myDir");
Runtime.exec("/bin/shutdown -r now");

Answer 1

You can use the Process returned by exec and wait until it finishes:

Process p = Runtime.exec("/bin/rm -rf /myDir");
p.waitFor();
Runtime.exec("/bin/shutdown -r now");

Answer 2

您可以使用Process.waitFor（）等待命令完成，也可以合而为一。

Runtime.exec("/bin/sh -c '/bin/rm -rf /myDir ; /bin/shutdown -r now'");

Answer 3

The Runtime.exec methods returns a Process on which you can call the waitFor method .

Do it for the first command and launch the second one just after.