Log4j does not recreate files on deletion

Question

I have a web application in Tomcat that uses log4j for logging.
If I delete the log files while the web application is running the files are not recreated?
How can I

Answer 1

You can have a customized RollingFileAppender and check for file existence. This code checks for file existence before every logging and creates the file if it is missing.

public class CustomRollingFileAppender extends RollingFileAppender {

// ... Constructor

@Override
    public void append(LoggingEvent event) {
        if (!new File(this.fileName).exists()) {
            try {
                setFile(this.fileName, fileAppend, bufferedIO, bufferSize);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        super.append(event);
    }
}