Question

I have run an external tool through exce() function in a separate command line console.

command = "cmd.exe /c start /min doxygen " + strDoxyfilePath;   
System.out.println("command : " + command);

//pass the command to execute
Process p=Runtime.getRuntime().exec(command);

I used this for read input stream:

BufferedReader br = new BufferedReader(new InputStreamReader
    (p.getInputStream(), "UTF-8")); //read output of doxygen
String line = null;
while ((line = br.readLine()) != null){
    System.out.println("I M HERE: "+line);
}

But control doesn’t go inside while loop and I want to get proper signal at the process end.

Answer 1

I think it is because of the start in your command. You are probably doing it to avoid a cmd window but I think you cannot not interact with the program then.

Try

command = "cmd.exe /c doxygen " + strDoxyfilePath;   

Also, note that

• You also need to read the stderr (p.getErrrorStream())
• Runtime.exec is not a great way to start a child process. ProcessBuilder is the newer and better way to do it.