Determining the readiness of another program

[jmHoekst]

Greetings,

I am looking for ideas on how to be able to tell if a program is fully loaded and ready for input. I am using

Runtime.getRuntime().exec("programName");

to start my program and the program can take between 10 seconds and 10 minutes to load. After the program is loaded, I have several automation steps being done, so they can't be started until the program has loaded.

Any ideas on how I can interact with my Windows XP os to determine if the program is ready for input? Whether it is using Java, or some other language/technique?

[Eranga]

Loading a program means, initialize all the process to make required functionality. So you have a sequence of processes. If you know what is the last process to load, until it's successful disable the user interactions with the application. Just an idea this is, on what I thought the easy way.

[jmHoekst]

Is there some kind of a way to perhaps get the %cpu usage from the system? That would be a perfect indicator of the system readiness. Maybe through JNI? Anybody have any ideas?

[jmHoekst]

Eranga,

What you are saying sounds very good, but what tools are necessary to determine if the last process is successful? Either way, I think I will have to use a JNI or interface with C or VB to determine CPU %? Unless somebody has an alternative solution or suggestion...?

[Eranga]

Not a bad idea though. But how we define the CPU usage level. I mean how can we find that looking the usage a specific process is completed. Just look at the CPU usage without doing any on your system. Still you can see that usage level change from 0% to up, and upper level has no pre-defined level.

If you want to find the CPU usage, best solution is C/C++ interface, I think.

[jmHoekst]

Thanks for the advice Eranga, I have since made a small VBScript that will get the current CPU% on my system. Now, how would I use my Java program to call that script, and how would I get the value from the VBScript to my Java program?

[Eranga]

I've never do this. I hope using a runtime process we can run a VBScript. But the question is how to handle the output of the script. This is the way to run a script.

Code:

Runtime.getRuntime().exec("wscript.exe path_to_your_script");

[serjant]

Last monthes we are working for a driver center in Java code for Linux Sam,and to have an output of the command we do the following:

Code:

import java.util.*;
import java.io.*;
import javax.swing.*;
public class Shell {
	private static String command = "ls -Als";
	private static String command2 = "cat /etc/profile";
	private String string="";
	public static void main(String[] args) throws java.io.IOException {
		JFrame frame=new JFrame("Output");
		JTextArea textArea=new JTextArea();
		textArea.setEditable(false);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.pack();
		frame.getContentPane().add(textArea);
		frame.setSize(500,800);
		frame.setVisible(true);
		try {
	        
	        Process child = Runtime.getRuntime().exec(command);
	    
	        // Get the input stream and read from it
	        InputStream in = child.getInputStream();
	        int c;
	        while ((c = in.read()) != -1) {
	            textArea.append(String.valueOf((char)c));
	        }
	        in.close();
	    } catch (IOException e) {
	    }
try {
	        
	        Process child = Runtime.getRuntime().exec(command2);
	    
	        // Get the input stream and read from it
	        InputStream in = child.getInputStream();
	        int c;
	        while ((c = in.read()) != -1) {
	            textArea.append(String.valueOf((char)c));
	        }
	        in.close();
	    } catch (IOException e) {
	    }
		

}
}

You can do the same for windows,you can also access the PCB table to know if the process is launched and then to go with the next command.

I know the shell command to know if the process launched in Linux,but there is also a dos command for that,search for it buddy.

[Eranga]

What this replay mean. Seems to me there is no any connection with the original thread. I see that you have post the same post in several threads.

[serjant]

yes the code is the same,but read the post up to the end.

[Eranga]

I got you. Rather adding code the best thing is explain well. With a code it should be much better.