Java – how to get logger value in string array

I use log4j Logger, and I have used fileappender to write log values to files

Now I want to display the log values in textarea How do I assign logger values to string arrays?

Solution

You can add an additional appender to the logger Use writerappender to write a stringwriter, and then change the content of textarea to the value of stringwriter #tostring(),

Example code:

public static void main(String[] args) {
    Logger logger = Logger.getLogger("logger");
    Layout layout = new PatternLayout();
    StringWriter stringWriter = new StringWriter();
    WriterAppender writerAppender = new WriterAppender(layout,stringWriter);
    logger.addAppender(writerAppender);
    TextArea textArea = new TextArea();

    logger.error("test");
    //if(stringWriter changed){// compare to old TextArea-content?
      textArea.setText(stringWriter.toString());
    //}
    //System.out.println(stringWriter.toString());
  }

You need to find an intelligent way to update your textarea, depending on the loglevel, if the contents of the stringwriter change

Update: provide comparable solutions here