Author

Java One

Sharing common backend development knowledge.

Articles

Likes

Views

Comments

Latest from Java One

48 recent articles

Java One

Mar 23, 2026 · Artificial Intelligence

Master Claude Code: From Installation to Advanced AI‑Powered Development Workflows

This comprehensive guide walks you through the Claude Certified Architect exam structure, explains how Claude Code turns a language model into a full‑featured programming assistant, details installation on macOS, Linux and Windows, demonstrates tool‑use mechanics, context management, custom commands, and extending functionality with MCP servers such as Playwright.

AIClaudeCoding Assistant

0 likes · 27 min read

Master Claude Code: From Installation to Advanced AI‑Powered Development Workflows

Java One

Jan 24, 2026 · Artificial Intelligence

Master Claude Code: Unlock AI‑Powered Terminal Coding

This guide explains Claude Code’s agent loop, model choices, built‑in tool categories, project access scope, session handling, checkpoint and permission controls, and practical tips for efficiently using the AI‑driven terminal assistant to write, test, and refactor code.

AI Coding AssistantCheckpointClaude Code

0 likes · 15 min read

Master Claude Code: Unlock AI‑Powered Terminal Coding

Java One

Jan 13, 2026 · Backend Development

Master Claude Code: Install, Configure, and Leverage Its Full Power

This guide walks you through installing Claude Code, choosing and purchasing a model package, configuring the server via script or environment variables, switching models, using core commands, and applying its three operation modes to develop a complete project from start to finish.

AI toolsAnthropicCLI

0 likes · 13 min read

Master Claude Code: Install, Configure, and Leverage Its Full Power

Java One

Dec 26, 2025 · Fundamentals

How C/C++, Java, and Python Run: A Deep Dive into Compilation and Execution

This article compares the execution models of C/C++, Java, and Python, explaining how compiled machine code, bytecode with JVM, and interpreted bytecode with the Python virtual machine operate, and illustrates each process with example file structures and compilation steps.

C++CompilationExecution Model

0 likes · 6 min read

How C/C++, Java, and Python Run: A Deep Dive into Compilation and Execution

Java One

Dec 23, 2025 · Fundamentals

Master Python Numbers & Strings: Tips, Pitfalls, and Best Practices

This guide covers Python's core numeric and string types—including ints, floats, complex numbers, booleans, and bytes—explains common pitfalls like floating‑point precision, demonstrates formatting options, shows how to use enums and SQLAlchemy for cleaner code, and offers practical advice for readable and efficient scripting.

DecimalEnumsNumbers

0 likes · 21 min read

Master Python Numbers & Strings: Tips, Pitfalls, and Best Practices

Java One

Dec 22, 2025 · Backend Development

Injecting Third‑Party Classes in Spring Boot with @Configuration and @Bean

This tutorial explains how to register and inject a third‑party implementation like SwimCoach into a Spring Boot application using a @Configuration class and @Bean methods, covering bean creation, custom IDs, qualifier usage, and practical scenarios such as integrating AWS S3 clients.

AWSConfigurationSpring

0 likes · 5 min read

Injecting Third‑Party Classes in Spring Boot with @Configuration and @Bean

Java One

Dec 13, 2025 · Backend Development

Master Spring Bean Lifecycle: Init & Destroy Hooks with @PostConstruct & @PreDestroy

This guide explains the Spring bean lifecycle, focusing on the key initialization and destruction hook methods using @PostConstruct and @PreDestroy annotations, with code examples, usage tips, and important considerations for prototype-scoped beans.

Bean LifecycleJavaPostConstruct

0 likes · 4 min read

Master Spring Bean Lifecycle: Init & Destroy Hooks with @PostConstruct & @PreDestroy

Java One

Dec 12, 2025 · Backend Development

Understanding Spring Bean Scopes: When Singleton Becomes Prototype

This article explains how Spring manages bean instances, compares singleton and prototype scopes with concrete code examples, and shows why two injected beans may be equal or different depending on the @Scope annotation applied to the component class.

Bean ScopeJavaSingleton

0 likes · 3 min read

Understanding Spring Bean Scopes: When Singleton Becomes Prototype

Java One

Dec 8, 2025 · Backend Development

How to Enable Lazy Initialization for Spring Beans to Boost Startup Performance

This article explains Spring's default eager bean creation, demonstrates how to add @Lazy annotations or a global property to defer bean instantiation until needed, and discusses the benefits and drawbacks of lazy loading with code examples and runtime observations.

Springbackendbean

0 likes · 4 min read

How to Enable Lazy Initialization for Spring Beans to Boost Startup Performance

Java One

Dec 7, 2025 · Backend Development

Resolving Multiple Bean Implementations in Spring Boot with @Qualifier and @Primary

This tutorial explains why Spring Boot fails when several beans implement the same interface, and demonstrates how to use @Qualifier to select a specific bean or @Primary to set a default, including code examples, error messages, and best‑practice recommendations.

backend-developmentdependency-injectionprimary

0 likes · 7 min read

Resolving Multiple Bean Implementations in Spring Boot with @Qualifier and @Primary