how to display running commentary of cmd in textarea designed on gui application using swing in java

Question

After running one executable file from my gui application using swing in java, i want to display running commentary of cmd in my textarea which i have taken on my gui applcation in lower half portion .How can i do it . This is my code i have written for my Run button for running .exe file:-

private void runActionPerformed(java.awt.event.ActionEvent evt) {                                    
        System.out.println( "Running" );
        try
        {
            String [] command    = { "cmd.exe", "/c", "start",
                                     "runMatness.bat",
                                     "inputfile=" + myFilePath,
                                     "dbreporting=false" };
            Process myProcess    = Runtime.getRuntime().exec(command);
            BufferedReader input =
            new BufferedReader (new InputStreamReader(myProcess.getInputStream()));
            while ((line = input.readLine()) != null)
            {
                displayresult.append(line);
            }//while
            input.close();
        }// eof try
        catch (Exception err)
        {
            err.printStackTrace();
        }//eof catch

where displayresult is my textarea.

Answer 1

Be sure after every

displayresult.append(line);

to call:

java.awt.Container#validate()

method of the enclosing container. Container is the component which receives your displayresult:

someContainer.add(displayresult);