Introduction to JPA: What, Why, and When to Use It
Learn what JPA is, why it’s important, and when to use it. Explore setup, annotations, CRUD, queries, performance, pitfalls, and best practices with examples.
Learn what JPA is, why it’s important, and when to use it. Explore setup, annotations, CRUD, queries, performance, pitfalls, and best practices with examples.
Learn the key differences between JPA, Hibernate, and JDBC. Understand concepts, configurations, CRUD examples, performance, pitfalls, and best practices
Learn how to set up JPA in a Java project step by step. Includes persistence.xml, annotations, CRUD, queries, pitfalls, best practices, and version notes
Learn JPA architecture and core concepts with examples. Covers EntityManager, Persistence Context, CRUD, annotations, queries, performance, and best practices
Learn how to configure JPA with persistence.xml and properties. Includes setup, examples, EntityManager usage, CRUD, queries, pitfalls, and best practices
Learn JPA EntityManager and EntityManagerFactory in depth. Covers setup, CRUD, persistence context, queries, performance, pitfalls, and best practices
Learn persistence context in JPA with examples. Covers entity lifecycle, CRUD, EntityManager usage, lazy vs eager fetching, pitfalls, and best practices.
Learn JPA entity lifecycle states in detail: Transient, Managed, Detached, and Removed. Includes examples, persistence context, CRUD, pitfalls, and best practices
Learn how to map entities with JPA using @Entity, @Table, and @Id. Includes setup, annotations, CRUD, queries, pitfalls, and best practices for production
Learn how to define primary keys and use @GeneratedValue strategies in JPA. Covers identity, sequence, table generators, performance tips, and best practices.
Learn CRUD operations with JPA using EntityManager. Covers persist, find, merge, remove, JPQL, Criteria API, and best practices for production-ready code
Learn One-to-Many and Many-to-One mapping in JPA using annotations. Includes setup, CRUD, queries, pitfalls, performance tips, and best practices
Learn one-to-one mapping in JPA using @OneToOne annotation. Includes examples, CRUD operations, EntityManager usage, pitfalls, and best practices
Learn how to implement Many-to-Many relationship mapping in JPA with @ManyToMany. Includes examples, CRUD operations, queries, pitfalls, and best practices
Learn JPA cascade types (ALL, PERSIST, MERGE, REMOVE, REFRESH, DETACH) with examples. Covers setup, CRUD, pitfalls, performance tips, and best practices
Learn the difference between Lazy and Eager fetching in JPA. Includes examples, CRUD, queries, performance pitfalls, best practices, and SQL walkthroughs
Learn JPA inheritance mapping strategies: Single Table, Joined, and Table per Class. Includes code examples, SQL output, pros, cons, and best practices.
Learn how to use embedded types in JPA with @Embeddable and @Embedded. Includes setup, CRUD examples, SQL output, pitfalls, best practices, and use cases.
Learn how to implement composite keys in JPA using @IdClass and @EmbeddedId with real-world examples, CRUD operations, performance tips, and best practices
Learn how to use @Column, @Enumerated, and @Temporal in JPA for precise attribute mapping and column customization with real-world examples and best practices.