Re: Possible easy diagnostic outputting from multiple threads to the one text frame

Lew <>
Tue, 6 Jul 2010 09:26:46 -0700 (PDT)
markspace wrote:

Here's an example. This class is, I believe, thread-safe,
although quite simple.

class TextAreaHandler extends Handler {

    private final JTextArea view;

    public TextAreaHandler( JTextArea view )
       this.view = view;

    public void publish( LogRecord record )
       view.append( record.getMessage() );
       view.append( '\n' );

    public void flush()
       // no-op

    public void close()
       // possibly dispose the top-level window here


I worried about the 'view.append()' actions seeming not to be on the
EDT until I looked at the Javadocs for 'JTextArea#append()':
"This method is thread safe, although most Swing methods are not.
Please see _Threads and Swing_ for more information."


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