The sentry library provides a java.util.logging Handler that sends logged exceptions to Sentry. Once this integration is configured you can also use Sentry’s static API, as shown on the usage page, in order to do things like record breadcrumbs, set the current user, or manually send events.

The source for sentry can be found on GitHub.


For other dependency managers see the central Maven repository.

The following example configures a ConsoleHandler that logs to standard out at the INFO level and a SentryHandler that logs to the Sentry server at the WARN level. The ConsoleHandler is only provided as an example of a non-Sentry appender that is set to a different logging threshold, like one you may already have in your project.

Example configuration using the format:

# Enable the Console and Sentry handlers

# Set the default log level to INFO

# Override the Sentry handler log level to WARNING

When starting your application, add the java.util.logging.config.file to the system properties, with the full path to the as its value:

java -Djava.util.logging.config.file=/path/to/ MyClass

Next, you’ll need to configure your DSN (client key) and optionally other values such as environment and release. See the configuration page for ways you can do this.

import java.util.logging.Level;
import java.util.logging.Logger;

public class MyClass {
  private static final Logger logger = Logger.getLogger(MyClass.class.getName());

  void logSimpleMessage() {
    // This sends a simple event to Sentry
    logger.error(Level.INFO, "This is a test");

  void logWithBreadcrumbs() {
    // Record a breadcrumb that will be sent with the next event(s),
    // by default the last 100 breadcrumbs are kept.
        new BreadcrumbBuilder().setMessage("User made an action").build()

    // This sends a simple event to Sentry
    logger.error("This is a test");

  void logException() {
    try {
    } catch (Exception e) {
      // This sends an exception event to Sentry
      logger.error(Level.SEVERE, "Exception caught", e);

  void unsafeMethod() {
    throw new UnsupportedOperationException("You shouldn't call this!");
Help improve this content
Our documentation is open source and available on GitHub. Your contributions are welcome, whether fixing a typo (drat!) or suggesting an update ("yeah, this would be better").