GangForCode 
Note: – 2026-04-15: Qwen OAuth free tier has been discontinued. To continue using Qwen Code, switch to Alibaba Cloud Coding Plan, OpenRouter, Fireworks AI, or bring your own API key. Run qwen auth to configure. If you like the idea of Claude Code but want a serious free option, Qwen Code is one of the … Read more
Claude Code is a terminal-based coding assistant, while Ollama provides a local and cloud model runtime that can expose models through an Anthropic-compatible interface. Together, they can be used to experiment with coding agents using models other than Anthropic-hosted models. This guide explains the current Claude Code + Ollama workflow, including the simplest setup, local … Read more
AletheiaX is a free learning resource published by GangForCode for developers, students, job seekers, and people who want to build practical technology skills. This article explains the purpose of the platform, the type of learning experience it aims to provide, and how to approach it as part of a broader study routine. The goal is … Read more
Java SE 26 (JDK 26) was released in March 2026 as a non-LTS feature update. Unlike major LTS releases, Java 26 focuses on improving performance, security, and developer productivity rather than introducing new stable language syntax. It includes around 10 JEPs (Java Enhancement Proposals), many of which are preview or incubator features. In simple terms, … Read more
Modern software systems operate on datasets that can easily grow into millions or billions of records. At that scale, the difference between a fast system and a slow one is often determined by how efficiently the database can locate data. Database indexing plays a central role in this process. For a senior developer, indexing is … Read more
DeepSeek V4 moved from rumor to official release in 2026. DeepSeek announced the V4 family on April 24, 2026, with V4-Pro and V4-Flash, open-weight availability, API access, and a stated 1M-token context length. This updated guide focuses on the information developers can verify from DeepSeek’s official materials and on the engineering trade-offs that matter when … Read more
If you are preparing for Java backend interviews, one topic you will almost always face is Spring Boot interview questions. Whether you are a fresher or a mid-level developer, interviewers use Spring Boot questions to evaluate your understanding of real-world application development, REST APIs, dependency injection, and microservices architecture. This article provides a plagiarism-free, interview-focused … Read more
In Java, grouping is a very common operation when working with collections. You often need to organize data into categories — for example: Before Java 8, this required manual loops, maps, and condition checks. With the introduction of Streams API and Collectors, Java provides a powerful and clean way to perform grouping using: Collectors.groupingBy() This … Read more
If you are preparing for a Java interview — whether for a junior, mid-level, or senior backend role — understanding how interviewers think is just as important as memorizing answers. Modern interviews focus on core Java fundamentals, real-world problem solving, performance, and system design skills. This article gives you a plagiarism-free, structured guide to the … Read more
Artificial Intelligence is no longer limited to Python ecosystems. With LangChain4j, Java developers can integrate modern LLMs cleanly and professionally. In this tutorial, we’ll build an interactive AI console using Google Gemini — specifically the fast and efficient Gemini 2.5 Flash model. By the end of this guide, you will have: What is LangChain4j? LangChain4j … Read more