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Thread-Safety

Mastering Java Concurrency in 2025: Thread Safety, Synchronization, and Performance

The landscape of Java development has evolved dramatically over the last decade. By 2025, with the maturity of Java 21+ and the widespread adoption of Virtual Threads (Project Loom), the way we handle concurrency has shifted. However, the fundamental laws of physics within the JVM—shared mutable state, memory visibility, and race conditions—remain unchanged.