Engineering With Java: Digest #13
Curated and Hand Picked Java and Spring Blogs.
In this edition of the Engineering With Java newsletter, we have hand-picked 10 interesting Java and Spring articles that are worth reading. Consider sharing your love by liking and sharing your feedback in the comment section.
Grokking the Java Interview
Crack your Java interview by preparing important topics and mastering key concepts in a guided and structured way in a short time.
1: Increase readability and reduce complexity with Java’s Pattern Matching
Java's Pattern Matching has been a significant improvement since version 14, aiming to increase readability, reduce cognitive complexity, and avoid hard-to-spot bugs. The code used to check the type of an object is often too verbose and complex to understand, leading to hidden errors. However, new features since version 14 have improved this area. In Java 16, Pattern Matching for instanceOf cases was added, reducing code repetition and boilerplate. This approach includes a cast in the condition, making it easier to read and avoiding extra type-casts.
2: Mastering Exception Handling in Java Lambda Expressions
This article discusses the importance of exception management in Java, focusing on the use of lambda expressions for expressing anonymous functions. Lambda expressions, which are typically used with functional interfaces, are often associated with operations that might throw checked exceptions within lambda bodies.
3: Debugging Streams with Peek
The article discusses the use of the peek() method for debugging Java streams effectively. It begins by introducing Java streams, highlighting their functional approach to handling collections and data processing. Through a simple example, it demonstrates the concise and readable nature of stream operations compared to traditional iterative methods.
4: Intro to the Apache Commons CLI
The tutorial provides an overview of the Java Apache Commons CLI library, emphasizing its role in simplifying the development of command-line interfaces (CLIs) for software tools. It discusses key concerns of CLIs, such as parsing command line arguments, displaying help information, handling missing options, unknown options, and mutually exclusive options.
5: Mastering API-First Development: Strategies and Best Practices
The article provides an in-depth exploration of API-First Development, a transformative paradigm in software creation that prioritizes APIs as the foundation. It emphasizes the benefits of API-First Development, including flexibility, scalability, reusability, efficiency, and future-proofing.
6: Looking at Java 22: Statements before super
The article discusses Java 22's JEP 447, which relaxes strict rules for constructors, allowing certain statements to execute before calling super(...). In traditional Java, every subclass constructor must invoke super(...) or delegate to another constructor using this(...). However, this constraint can be cumbersome in scenarios where subclass constructors need to prepare or validate arguments before passing them to the superclass constructor.
7: Java Frameworks for Microservices Development
The article provides an overview of popular Java frameworks for developing microservices, aiming to simplify the process for developers. It lists various frameworks, including Spring Boot, Micronaut, Quarkus, Helidon, Vert.x, and others, highlighting their features and suitability for microservices development.
8: Understanding Class Loading In Java
The article discusses class loading in Java, which is the process by which the Java Virtual Machine (JVM) dynamically loads classes into memory at runtime. It explains the components of class loading, including the Bootstrap Class Loader, Extension Class Loader, and System/Application Class Loader.
9: Understanding IoC Container and Beans
The article discusses the Inversion of Control (IoC) container and beans in the Spring Framework, which are fundamental concepts for managing application components and dependencies efficiently. It explains how the IoC container manages beans, the backbone of Spring applications, and how Dependency Injection (DI) achieves IoC, enhancing modularity and testability of code.
10: PostgreSQL Index Types
This article explores PostgreSQL index types, focusing on B+Tree, Hash, and GIN indexes. Author explains their characteristics, usage scenarios, and performance implications through detailed examples and SQL queries. Author emphasizes the importance of selecting the appropriate index type to optimize SQL query performance, considering factors like selectivity and data structure.
That’s a wrap for this week. If you have any feedback, requests, or improvements for this newsletter consider commenting so that we can work on improvements for the next one.