Older Java Versions Review

Older Java versions (specifically Java 8 and below) are the "Windows XP" of the enterprise world: they work surprisingly well for what they were built to do, but they are technically frail, insecure, and expensive to maintain in the long run.

| Feature | Older Java (8) | Modern Java (21) | | :--- | :--- | :--- | | | Streams/Lambdas (Basic) | Records, Pattern Matching, Text Blocks | | Boilerplate | High (Getters/Setters required) | Low (Lombok style built-in via Records) | | Performance | Good for small apps | Excellent for cloud/microservices | | Threads | OS Threads (Heavy) | Virtual Threads (Lightweight, massive concurrency) | | Cost | Free (OpenJDK) or Paid (Oracle) | Free (Most distributions) | older java versions