Java – collect Linux command output

I'm on a @ L_ 404_ 0 @ on the machine I have a java program that will run some linux commands, such as PS, top, list or free - M

The way to run commands in Java is as follows:

Process p = Runtime.getRuntime().exec("free -m");

How to collect output through a java program? I need to process the data in the output

Solution

Using process Getinputstream () gets the standard InputStream representing the newly created process

Note that starting / running external processes from Java can be tricky and flawed

They are described in this excellent article, which also describes their methods