2 posts tagged with "Language Features"

Java records, introduced in Java 16 (JEP 395), finally let you delete Lombok. You know, that library you added to avoid writing 50+ lines of getters, then spent hours debugging @Data annotation conflicts and weird IDE plugin issues. One line. No plugins. No magic. Just the Java compiler doing what it should have done 25 years ago.

In this guide, you'll learn:

• The problem records solve — why we needed them
• Core syntax and features — compact constructors, immutability, and generated methods
• Real-world patterns — DTOs, value objects, projections, and configuration
• When records fit (and when they don't) — practical guidance for your codebase

Java 25 continues the recent Java trend: fewer flashy features, more small, sharp tools that make everyday code safer, faster, and easier to reason about.

In this post we’ll look at:

• simpler main and java.lang usage
• constructor “prologues” and inheritance
• ScopedValue vs ThreadLocal
• runtime & performance improvements
• _ as an unnamed parameter/pattern
• sealed types with safer switch
• **gatherers: custom intermediate stream operations **