Obtaining system information (RAM, disk space, etc)

[dave taubler]

Does anyone know of an easy way to obtain basic system information via Java? I'm talking about things like amount of RAM, total and available disk space, processor type/speed, etc. Stuff that would be used in conjunction with bug reports.

I've basically been tasked with trying to include that info with our app's automated error reports, but it's one of those "only do it if it takes less than an hour" kinda things... so no JNI or anything like that. I'm looking through the API docs (e.g. at classes like System), but nothing's jumping out.

Thanks!

[John Weir]

Learn by example.
Hi here is a solution for you'r problem.

But please be sure to visit:

http://java.sun.com/docs/books/tutorial/essential/system/properties.html

import java.util.Properties;
 
public class SysProp
{
 
public void SysProp()
{
 
Runtime rt = Runtime.getRuntime();
System.out.println("freeMemory " + rt.freeMemory());
System.out.println("maxMemory " + rt.maxMemory());
System.out.println("totalMemory " + rt.totalMemory());
 

String os = System.getProperty( "os.name" );
String vendor = System.getProperty( "java.vendor" );
 
System.out.println(os);
System.out.println(vendor);
}
public static void main(String[]args)
{
SysProp run = new SysProp();
run.SysProp();
}
 
}

[dave taubler]

Ah, I keep forgetting about Runtime.

Thanks!

[Jim Yingst]

Be aware though that the memory referred to in those Runtime methods is the memory used by the JVM process. It's not the total memory available on the machine. I don't know of a way to get that in Java, other than to use either System.exec() or JNI to access some platform-specific code. As for the stuff you want on the filesystem - that's hard to get in Java too, unless you're willing to use the Java SE 6 beta, where they've finally added several useful new methods to java.io.File, including getTotalSpace().