How to do real time command line interaction in Java?

Question

I know how to invoke command line in Java like this

Runtime rt = Runtime.getRuntime();
Process pr = rt.exec("dir && c: && dir"); // also can run multiple command with &&

then I can print its response while getting its InputStream this is working fine I found very good examples here. I can also run multiple commands one after another while putting && in between commands. But once I invoked rt.exec() after that i cannot run any other command meaning i lose control from command line meaning only i can print InputStream.

My problem is that I want to run command and after analyzing its response i want to write next command dynamically according to previous command response.

Note: I can run multiple commands with && but its only when i know what will happen after one command and while assuming I run next command like we run in Real Command Line Window?

The following might interest you (Java 9's REPL): http://www.jclarity.com/2015/04/15/java-9-repl-getting-started-guide/ — Nir Alfasi, Jul 15 '15 at 06:07
So upgrade... :) And seriously, you know that Java 7 is [no longer supported](https://www.java.com/en/download/faq/java_7.xml), right ? — Nir Alfasi, Jul 15 '15 at 06:09
@alfasin I'm having customers with Java 5...updating is not the answer in any environment :-/. I wish it could be that easy... — VWeber, Jul 15 '15 at 06:13
@VWeber when you publish an API to your customer that's a different case than trying to implement a REPL when it already exists ;) — Nir Alfasi, Jul 15 '15 at 06:14

score 0 · Answer 1 · answered Jul 15 '15 at 07:01

0

You should take a look with Apache CLI framework

answered Jul 15 '15 at 07:01

Paweł Głowacz

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How to do real time command line interaction in Java?

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