Question

I have developed a exe of my Java application, and run it from a thumb drive. It will take some time to execute. But my end user thinks it is not running and clicks for the second time. I need to stop this. I need to stop continuous click on the exe, while it is running. I used the shell script to check whether the exe is running or not. And displays the message, that the exe is already running. And stops the further process. I need this to be happened while exe is running for the second time. I couldn’t figure this out. Is there any way to disable the exe from click, while it is running. Or how can I use the check whether it is running or not.

import java.io.BufferedReader;
import java.io.File;
import java.io.FileWriter;
import java.io.InputStreamReader;


public class VBSUtils {

      private VBSUtils() {  }

      public static boolean isRunning(String process) {
        boolean found = false;
        try {
            File file = File.createTempFile("realhowto",".vbs");
            file.deleteOnExit();
            FileWriter fw = new java.io.FileWriter(file);

            String vbs = "Set WshShell = WScript.CreateObject(\"WScript.Shell\")\n"
                       + "Set locator = CreateObject(\"WbemScripting.SWbemLocator\")\n"
                       + "Set service = locator.ConnectServer()\n"
                       + "Set processes = service.ExecQuery _\n"
                       + " (\"select * from Win32_Process where name='" + process +"'\")\n"
                       + "For Each process in processes\n"
                       + "wscript.echo process.Name \n"
                       + "Next\n"
                       + "Set WSHShell = Nothing\n";

            fw.write(vbs);
            fw.close();
            Process p = Runtime.getRuntime().exec("cscript //NoLogo " + file.getPath());
            BufferedReader input =
                new BufferedReader
                  (new InputStreamReader(p.getInputStream()));
            String line;
            line = input.readLine();
            if (line != null) {
                if (line.equals(process)) {
                  found = true;
                }
            }
            input.close();

        }
        catch(Exception e){
            e.printStackTrace();
        }
        return found;
      }



}

And In my main class, I called VBUtils.

 boolean result = VBSUtils.isRunning("myexe.exe");
if(result)
{
     msgBox("myexe is running. Please wait");
}
else
{
 // my part of execution.
}

If I call like this, the exe got terminated. Both the first and second execution.

Answer 1

The easiest way would be to present the user with some kind of visual feedback, so he knows that the application is running. (e.g. a console window with messages, a wait dialog, …)