Documentation for Runtime?

RichardDL

Hello, I've been using processing in a small way for a year or two, some graphics, data link between Arduino and Processing sketch. Have been wanting to interact more with the computer (WXP, W7, RPi) couldn't see how. Now scanning the forum find e.g. Runtime.getRuntime().exec. Where is the documentation for Runtime? I've searched the main Reference and Libraries pages.

laimperiestro

Hello @RichardDl

Is suppossed this "The java.lang.Runtime.exec(String[] cmdarray, String[] envp) method executes the specified command and arguments in a separate process with the specified environment. This is a convenience method. An invocation of the form exec(cmdarray, envp) behaves in exactly the same way as the invocation exec(cmdarray, envp, null)."

Check https://www.tutorialspoint.com/java/lang/runtime_exec_envp.htm

GoToLoop

1. http://docs.Oracle.com/javase/8/docs/api/java/lang/Runtime.html
2. https://forum.Processing.org/two/discussions/tagged?Tag=getruntime()
3. https://forum.Processing.org/two/discussions/tagged?Tag=exec()

RichardDL

Thanks @laimperiestro. I've had a look at that and tried a couple of other methods.

RichardDL

@GoToLoop - thanks. The basic definition of the RunTime class helps, and good to see people doing the things I thought Processing couldn't.

jeremydouglass

@RichardDL -- although you are probably already aware of it, I thought in the context of exec() it might make sense to mention Processing's built-in function launch():

• https://processing.org/reference/launch_.html

From the reference:

For users familiar with Java, [launch] is not the same as Runtime.exec(), because the launcher command is prepended. Instead, the exec(String[]) function is a shortcut for Runtime.getRuntime.exec(String[]). The exec() function is documented in the JavaDoc in the PApplet class.

As it says, there is also a PApplet.exec(), documented along with launch here:

• http://processing.github.io/processing-javadocs/core/processing/core/PApplet.html

RichardDL

@jeremydouglas - thanks. I had tried launch, but then forgot about it. I'll try them all in turn eventually.