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HowToDoInJava: Java, Spring and Hibernate Tutorials

Simple and easy\-to\-follow free tutorials on Core Java, Spring, Spring Boot, Maven, JPA, Hibernate, JUnit, Python and other popular libraries\.

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# HowToDoInJava: Java, Spring and Hibernate Tutorials

> Simple and easy\-to\-follow free tutorials on Core Java, Spring, Spring Boot, Maven, JPA, Hibernate, JUnit, Python and other popular libraries\.

Generated by Yoast SEO v28.7, this is an llms.txt file, meant for consumption by LLMs.

## Pages
- [Dropwizard Tutorials: REST Services With Dropwizard 5](https://howtodoinjava.com/dropwizard-tutorials/): Dropwizard tutorials for Dropwizard 5 and Java 25: hello world REST API, health checks, HTTP client, basic auth security and common startup errors\.
- [About HowToDoInJava and Lokesh Gupta](https://howtodoinjava.com/about/)
- [Java Tutorials](https://howtodoinjava.com/)
- [JUnit Tutorial: Learn JUnit 6 and JUnit 5 With Examples](https://howtodoinjava.com/junit-tutorial/): JUnit tutorial for JUnit 6\.1\.3 and JUnit 5\. Learn the Platform, Jupiter and Vintage, follow a beginner path and find a guide for every JUnit annotation\.
- [Java 8 Features With Examples and Java 25 Updates](https://howtodoinjava.com/java-8-tutorial/): Java 8 features explained with short examples, from lambdas, streams and Optional to java\.time, plus what Java 25 changed and how to migrate\.

## Posts
- [Dropwizard Client Configuration with Jersey and HttpClient](https://howtodoinjava.com/dropwizard/client-configuration-and-examples/): Dropwizard client guide with JerseyClientBuilder, HttpClientBuilder and config\.yml settings for timeouts, connection pool, retries, gzip, TLS and tests\.
- [Dropwizard Basic Auth Example With @Auth and @RolesAllowed](https://howtodoinjava.com/dropwizard/dropwizard-basic-auth-security-example/): Dropwizard basic auth example with dropwizard\-auth: Authenticator, Authorizer, BCrypt password hashes, @RolesAllowed, caching and tests for 401 and 403\.
- [Dropwizard Could Not Resolve Type Id 'http' Error: Fix](https://howtodoinjava.com/dropwizard/solved-dropwizard-failed-parse-configuration-not-resolve-type-id-http-subtype/): Fix the Dropwizard error Failed to parse configuration, could not resolve type id 'http' as a subtype of ConnectorFactory: add the Shade services merge\.
- [Dropwizard Tutorial: Hello World REST API Example \(Java 25\)](https://howtodoinjava.com/dropwizard/tutorial-and-hello-world-example/): Dropwizard tutorial with a hello world REST API on Dropwizard 5 and Java 25: configuration, resources, fat JAR, ports, health check and JUnit 6 tests\.
- [Dropwizard Health Check: Configuration and Examples](https://howtodoinjava.com/dropwizard/health-check-configuration-example/): Dropwizard health check examples with a custom HealthCheck, the admin /healthcheck, the health block in config\.yml, Kubernetes probes and JUnit tests\.

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