Java Runtime.getRuntime(): getting output from executing a command line program

Question

I\'m using the runtime to run command prompt commands from my Java program. However, I\'m not aware of how I can get the output the command returns.

Here is my code:

Answer 1

If use are already have Apache commons-io available on the classpath, you may use:

Process p = new ProcessBuilder("cat", "/etc/something").start();
String stderr = IOUtils.toString(p.getErrorStream(), Charset.defaultCharset());
String stdout = IOUtils.toString(p.getInputStream(), Charset.defaultCharset());