Thread: wmi usage or PC info in java

I have been informed that Java doesn't have built-ins that get PC information, so I went looking around the net and found this. It does WMI calls in a Java program, as I can tell. Because this is a class, I am trying to use it. I think I am doing this correctly. I took from examples and tried to make it my own.

So, when I compile it, get 2 errors from where I have the class. It says that "jWMI WMIV=new jWMI();" cannot find symbol for "jWMI".

What am I doing wrong?

I have copied the .class and .java to the same folder as the wmitest.java. Does it go somewhere else or am I looking at this all wrong?

Last, question. Am I doing this all wrong?

jWMI – Query Windows WMI from Java | henryranch.net

//test the use of jWMI class call
import javax.swing.JOptionPane;
 
public class wmitest{
	public static void main(String args[]){
 
		jWMI WMIV=new jWMI();
		String model = WMIV.getWMIValue("Select Model from Win32_ComputerSystem","Model");
 
		JOptionPane.showMessageDialog(null,"This is the PC model__"+model);
	}
}

Originally Posted by Norm

Where is the class jWMI defined? Its definition needs to be on the classpath so the compiler can find it.
(And also for the java program to execute )
You will also need an import statement if the class is in a package.

I was able to fix the path on my PC, but I still don't understand classpath. I have been reading and reasearching all afternoon and most of the night, but haven't figured it out. But I think this this is what you are talking about.

javac =where I have the jWMI.class located wmitest.java

I have tried using the import statement but still get errors when I compile it. I will get a package doesn't exist error.

Zaphod_b

Thanks for the help. I was able to follow what you are telling me. I did get it to run, but I don't understand much about the try and catch stuff, so I will read about it some more.

So, when I want to put something like this in a program, I will need to add it as a package, because I eventually, want to make this all into a JAR so all, we are using is a single file.

Yes and my head is still hurting from all the reading and trying things out. I really do appreciate the help. The book that I have, is old and doesn't always translate into what I am doing today. You can probably, see that I am doing a mix of old and new and trying to do thing way over my head, but I am really learning a lot.

Norm,
Thanks, some of this stuff is confusing.

By the way. . .I am on several Java forums, but I find this forums gives me REAL answers that I can use and not just read the tutorials.