#java Development Tutorials & Tips | Roast Dev

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Spring Boot: JPA One-to-One Mapping

Introduction When working with relational databases in Java, JPA (Java Persistence API) makes it easier to map relationships between entities. One of the most fundamental relationships is One...

14.03.2025 0 Read More

Spring boot: JPA One-to-Many Mapping

Introduction When building relational databases in Java, understanding how to map relationships between entities is crucial. One of the most common relationships is One-to-Many mapping. In th...

14.03.2025 0 Read More

Spring Boot: JPA Many-to-One Mapping

Introduction When designing a relational database in Java, one of the most essential relationships you’ll come across is Many-to-One mapping. It allows multiple entities to be linked to a s...

14.03.2025 0 Read More

Spring Boot: JPA Many-to-Many Mapping

Introduction When designing relational databases in Java, you’ll often encounter situations where multiple entities are related to multiple other entities. This is where Many-to-Many mappin...

14.03.2025 0 Read More

Microsserviços VS Monolito: O que usar em minha aplicação Spring Boot?

Microsserviços vs Monolito: Qual a Melhor Escolha para sua Aplicação Java Spring Boot? A escolha entre uma arquitetura monolítica ou baseada em microsserviços é uma das decisões mais i...

14.03.2025 0 Read More

Setting Up an Automated Java Build and Deployment Pipeline with AWS CodeArtifact

Introduction In this guide, I will walk you through how I set up an EC2 instance to compile, package, and publish a Java-based Maven project to AWS CodeArtifact. This setup ensures a robust a...

14.03.2025 0 Read More

Invert Binary Tree in Java

Invert Binary Tree - A Step-by-Step Journey Binary trees are a fascinating data structure, and problems involving them often show up in coding interviews. Today, I’ll walk you through my so...

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6.4 Referenciando métodos de instância

Criando um method reference para um objeto específico:Se temos um objeto (rodrigo), podemos referenciar um de seus métodos como rodrigo::tornaModerador. Exemplo: ⛶Usuario rodrigo = new Usuario("Ro...

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6.5 Referenciando métodos que recebem argumen tos

Referenciando métodos que aceitam parâmetros:Podemos usar method references para métodos que recebem argumentos, como println da classe PrintStream. Exemplo: ⛶usuarios.forEach(System.out::println...

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6.6 Referenciando construtores

Uso de method reference com construtores:Assim como métodos estáticos, podemos referenciar construtores usando new: ⛶Usuario rodrigo = Usuario::new; // ERRO!Esse código não compila porque Usuari...

15.03.2025 0 Read More

Spring Boot: JPA One-to-One Mapping

Spring boot: JPA One-to-Many Mapping

Spring Boot: JPA Many-to-One Mapping

Spring Boot: JPA Many-to-Many Mapping

Microsserviços VS Monolito: O que usar em minha aplicação Spring Boot?

Setting Up an Automated Java Build and Deployment Pipeline with AWS CodeArtifact

Invert Binary Tree in Java

6.4 Referenciando métodos de instância

6.5 Referenciando métodos que recebem argumen tos

6.6 Referenciando construtores

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