A problem with JTextArea.write()

Question

hi, I'm writting some code about reading content of a TextArea by use the method JTextArea.write().
when the content is short, that will be ok, but the content is too long, my thread seems to be dead. and NetBeans's debuger shows nothing, just unresponse.
can someone to point out my problem in the code below?
textSource.write(bfw); //textSource is extends from JTextArea, when content in it is too large, dead here
private void output2textResult() {
        Runnable myThread = new Runnable() {
            public void run() {
                // component.doSomething();
                final String source = txtFldSource.getText();
                final String destination= txtFldDestination.getText();
                String tmp;
                try{
                    PipedWriter pipOut = new PipedWriter();                  
                    BufferedWriter bfw = new BufferedWriter(pipOut);   //I wrapped the pipOut with the BufferedWrite
                    PipedReader pipIn = new PipedReader(pipOut);
                    BufferedReader bfr= new BufferedReader(pipIn);
//problem line below
                    textSource.write(bfw);   //textSource is extends from JTextArea, when content in it is too large, dead here  
                    while(bfr.ready()){
                        tmp = bfr.readLine();
                        tmp.replaceAll(source, destination);
                        textResult.append(tmp+"\n");
                    bfr.close();
                    pipIn.close();
                    pipOut.close();
                }catch(IOException e){
                    System.out.println(e);
        SwingUtilities.invokeLater(myThread);

Answer 1

This won't work. Pipes are for use between threads. The implication of what you're doing in a single thread is that the pipe is somehow capable of holding the entire source text (which it isn't). In other words you're just trying to buffer it, so you may as well just get all the source text as a String and do your magic on it directly.