How to send user input to terminal from java program (i.e by programmatically)?

Question

I am executing command from java program like

Process myProcess = Runtime.getRuntime().exec(\"sudo cat /etc/sudoers\"); //It asks for password so I send passwor         


        

Answer 1

You can do it using the -S option of sudo :

String[] cmd = {"/bash/bin","-c","echo yourpassword| sudo -S your command"}; 
Runtime.getRuntime.exec(cmd); 

But I'm not sure it's recommendable.

I'm not the author, I found this there : http://www.coderanch.com/t/517209/java/java/provide-password-prompt-through-Java