Once Popular, Now Deprecated: Java Features You Should Avoid As Java evolves, some features that were once widely used have now been deprecated or are no longer recommended.

Java Object Creation and Heap Memory Allocation

Java Virtual Machine (JVM) Memory

Unsafe in Java: Enabling Low-Level, C/C++-Style Operations The Unsafe class, found in the sun.misc package, provides a powerful—yet dangerous—set of low-level operations. It bypasses standard Java access checks and memory safety mechanisms, making it a favorite tool for performance-critical libraries like Netty, Kafka, and Disruptor.

Introduction to Java Modules