Here is an example of using the ReconfigureOnChangeTask class from the logback-classic library in Java:

import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
import ch.qos.logback.core.joran.spi.JoranException;
import ch.qos.logback.core.util.StatusPrinter;

public class LogbackExample {
    public static void main(String[] args) {
        LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
        try {
            JoranConfigurator configurator = new JoranConfigurator();
            configurator.setContext(context);
            context.reset();
            configurator.doConfigure("logback.xml");
        } catch (JoranException je) {
            StatusPrinter.printInCaseOfErrorsOrWarnings(context);
        }
        ReconfigureOnChangeTask task = new ReconfigureOnChangeTask();
        task.setContext(context);
        task.setDelay(5000);
        task.setReconfigureOnChange(true);
        task.start();
    }
}

This example sets up a ReconfigureOnChangeTask to periodically check for changes in the logback.xml configuration file, and if changes are detected, the task will automatically reconfigure the logger context using the updated configuration.

The setDelay(5000) call tells the task to check for changes every 5 seconds. The setReconfigureOnChange(true) call tells the task to automatically reconfigure the logger context if changes are detected.

The logback.xml should be placed in classpath to be loaded by JoranConfigurator and ReconfigureOnChangeTask

Please note that this example is a basic example and assumes a basic logback.xml configuration, your specific usage may vary.