https://brilianfirdaus.com/blog/tags/java/Recent content in Java on Brilian FirdausHugoen-USSun, 16 Mar 2025 16:41:45 +0000https://brilianfirdaus.com/blog/understanding-how-java-garbage-collector-works/Tue, 28 May 2024 03:00:40 +0000https://brilianfirdaus.com/blog/understanding-how-java-garbage-collector-works/How Java manages memory and reclaims objects, with an overview of Serial, Parallel, G1, and ZGC collectors and their performance tradeoffs.https://brilianfirdaus.com/blog/how-to-implement-json-web-token-jwt-in-java-spring-boot/Sun, 12 Jun 2022 10:58:28 +0000https://brilianfirdaus.com/blog/how-to-implement-json-web-token-jwt-in-java-spring-boot/Implement signed and encrypted JSON Web Tokens in Java Spring Boot with jose4j, covering JWS creation and validation, JWE, and key handling.https://brilianfirdaus.com/blog/how-to-connect-java-with-elasticsearch/Fri, 18 Dec 2020 14:35:45 +0000https://brilianfirdaus.com/blog/how-to-connect-java-with-elasticsearch/Connect Spring Boot 2 to Elasticsearch using Spring Data repositories, ElasticsearchRestTemplate, and the REST high-level client, with CRUD examples.https://brilianfirdaus.com/blog/avoiding-the-null-pointer-exception-with-optional-in-java/Fri, 20 Nov 2020 04:33:00 +0000https://brilianfirdaus.com/blog/avoiding-the-null-pointer-exception-with-optional-in-java/How to use Java Optional to handle missing values, with examples of map, flatMap, filter, fallback methods, and common mistakes to avoid.https://brilianfirdaus.com/blog/functional-programming-in-java-explained/Wed, 18 Nov 2020 16:49:35 +0000https://brilianfirdaus.com/blog/functional-programming-in-java-explained/Java functional programming with lambda expressions and functional interfaces, including built-in interfaces and a small custom Stream implementation.