The Sentry Java SDK can be used with Kotlin, Scala, and other JVM languages. Code examples are typically provided in both Java and Kotlin.

On this page, we get you up and running with Sentry's SDK.

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Sentry captures data by using an SDK within your application’s runtime.


For other dependency managers, see the central Maven repository.

sentry-servlet module comes with a ServletContainerInitializer that registers a ServletRequestListener which enhances each Sentry event triggered within the scope of HTTP request with a request information like HTTP method, query string, url and HTTP headers.

Jakarta support

We also provide a module called sentry-servlet-jakarta if you want to use jakarta.servlet-api instead of javax.servlet-api.


Configuration should happen as early as possible in your application's lifecycle.

The following example configures a SentryInitializer servlet container initializer that initializes Sentry on application startup.

package sentry.sample;

import io.sentry.Sentry;
import javax.servlet.ServletContainerInitializer;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;

public final class SentryInitializer implements ServletContainerInitializer {

  public void onStartup(Set<Class<?>> c, ServletContext ctx) throws ServletException {
    Sentry.init(options -> {

Create a file in src/main/resources/META-INF/services named javax.servlet.ServletContainerInitializer, with a full name of your custom SentryInitializer class as a content:



This snippet includes an intentional error, so you can test that everything is working as soon as you set it up.

import io.sentry.Sentry;

try {
  throw new Exception("This is a test.");
} catch (Exception e) {

To view and resolve the recorded error, log into and open your

projectRepresents your service in Sentry and allows you to scope events to a distinct application.
. Clicking on the error's title will open a page where you can see detailed information and mark it as resolved.

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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").