Java

From CSV to Insight: Parse and Analyze CSV Files Using Modern Java Streams   In today’s data-driven world, it’s common to work with large CSV files for everything from analytics…

Local File Sync Tool in Java Using WatchService   Keeping directories in sync is a common task for developers and system administrators alike — whether you're backing up a folder,…

Creating a Java API Client for GitHub Repos in Under 50 Lines   When you're starting out with REST API integrations in Java, GitHub provides an excellent hands-on opportunity. In…

Efficient Text Search with Tries in Java   When working with search-heavy applications like autocomplete, spell checkers, or dictionary lookups, performance is everything. Traditional string matching can be slow, especially…

Java Automation: Schedule Email Reports with Java and Quartz   Automating email reports is a common requirement in many business applications—whether it's daily sales updates, performance dashboards, or system logs.…

Java Automation: Auto-Login to Web Pages Using Selenium   Automating login processes in web applications is a common requirement for tasks such as testing, data scraping, or monitoring dashboards that…

Java Stream API: Grouping Employees by Department Example   One of the most powerful features introduced in Java 8 was the Stream API. It brought a functional programming flavor to…

Real-Time Currency Converter with Java + OpenExchangeRates API   Building a real-time currency converter is a practical Java project that illustrates how to consume third-party APIs, parse JSON data, and…

Secure Password Validation in Java Using Regular Expressions   Creating secure password validation logic in modern applications is a critical step toward protecting user data. Weak passwords open doors to…

Java Coding Exercise: Implement LRU Cache from Scratch with LinkedHashMap   Building an efficient in-memory cache is a common task in software systems, especially when performance and memory usage are…