Prevent wmic.exe from writing TempWmicBatchFile.bat

Question

I want to check in my Java application whether the Windows virtual keyboard is working or not.

I searched for it and found that I can use wmic.exe to search for the process.

This is what I do:

 Process proc = Runtime.getRuntime().exec("wmic.exe"); BufferedReader input = new BufferedReader(new InputStreamReader(proc .getInputStream())); OutputStreamWriter oStream = new OutputStreamWriter(proc .getOutputStream()); oStream .write("process where name='osk.exe' get caption"); oStream .flush(); oStream .close(); input.readLine(); while ((in = input.readLine()) != null) { if (in.contains("osk.exe")) { input.close(); proc.destroy(); return; } } input.close(); proc.destroy(); 

This works, but wmic somehow creates the file TempWmicBatchFile.bat with the line process where name='osk.exe' get caption .

How can I prevent this?

Answer 1

You can avoid opening another thread to transmit another command. It is for this reason that the temp bat file is created.

Use the code below. It will not create a temporary batch file

 public class WmicTest { public static void main(String[] args) throws IOException { Process proc = Runtime.getRuntime().exec("wmic.exe process where name='osk.exe' get caption"); BufferedReader input = new BufferedReader(new InputStreamReader(proc .getInputStream())); // OutputStreamWriter oStream = new OutputStreamWriter(proc // .getOutputStream()); // oStream.write("process where name='osk.exe' get caption"); // oStream.flush(); // oStream.close(); input.readLine(); String in; while ((in = input.readLine()) != null) { if (in.contains("osk.exe")) { System.out.println("Found"); input.close(); proc.destroy(); return; } } input.close(); proc.destroy(); } }