Handling Optional in Java

Introduction Start with a brief introduction about Optional and its importance in handling nulls in Java. Mention how it can improve the robustness of your code. Understanding Optional Explain what Optional is and how it works. Discuss how it can contain a non-null value or be empty, and how it provides methods to handle these […]

Mastering Custom Queries in Spring Data JPA

Introduction Start with a brief introduction about Spring Data JPA and its importance in simplifying database access. Mention how it eliminates boilerplate code and improves productivity. Query Creation from Method Names Explain how Spring Data JPA supports creating queries automatically from method names. Provide examples like findByLastname(String lastname), findByFirstnameAndLastname(String firstname, String lastname), etc. Using the […]

Understanding Spring Annotations: @ComponentScan, @Configuration, and @EnableAutoConfiguration

In this blog post, we’ll dive into some of the core annotations used in Spring Framework: @ComponentScan, @Configuration, and @EnableAutoConfiguration. @ComponentScan The @ComponentScan annotation is used by Spring to automatically detect the beans. It tells Spring where to search for components that should be managed by the Spring container. When you use @ComponentScan, Spring scans […]

What is boilerplate configuration in Spring Boot?

So, in essence, “boilerplate configuration” in Spring refers to the repetitive, largely unchanged setup code that developers had to write in every project. This code was necessary but didn’t directly contribute to the unique aspects of each application. Spring Boot was created to eliminate this boilerplate, allowing developers to focus more on writing the code […]

Interview At Encora Innovation labs

Question: How can you print the elements of a matrix in a spiral Order? Answer: This Question is available in Leetcode Spiral Matrix https://leetcode.com/problems/spiral-matrix/description/ The Common Mistake The common mistake occurs in the third and fourth for-loops of the code, where we are supposed to traverse the matrix in reverse order. The condition in these […]

Unlocking JPA Repositories with @EnableJpaRepositories in Spring Boot

In Spring Boot applications that use the Java Persistence API (JPA) for database access, the @EnableJpaRepositories annotation plays a crucial role in enabling and configuring JPA repositories. Let’s dive into what this annotation does and how it relates to the @SpringBootApplication annotation. Understanding JPA Repositories JPA repositories are interfaces that extend the JpaRepository interface provided […]

Understanding the mappedBy Attribute and Owning Relationships in JPA

In the world of Java Persistence API (JPA), the mappedBy attribute plays a crucial role when defining bidirectional relationships between entities. To fully grasp the importance of mappedBy, we must first understand the concept of owning a relationship and related terms. Owning the Relationship In a bidirectional relationship, both entities have a reference to each […]

Understanding @Entity and @Table Annotations in JPA

Introduction In this blog post, we will explore two key annotations used in Java Persistence API (JPA): @Entity and @Table. We will discuss what they are, how they work, and when to use each one. What is the @Entity Annotation? The @Entity annotation is used to mark a Java class as an entity, meaning that […]

Understanding FetchType.EAGER and FetchType.LAZY in JPA

Introduction In this blog post, we will explore two key fetching strategies used in Java Persistence API (JPA): FetchType.EAGER and FetchType.LAZY. We will discuss what they are, how they work, and when to use each one. What is FetchType.EAGER? FetchType.EAGER is a FetchType option in JPA that enables eager loading of data. This means that […]

Understanding JPA and Hibernate in Spring Boot Applications

Introduction In this blog post, we will explore two key technologies used in Java applications for interacting with databases: the Java Persistence API (JPA) and Hibernate. We will also discuss how these technologies are used in a Spring Boot application. What is JPA? The Java Persistence API (JPA) is a specification for object-relational mapping (ORM) […]