3 docs tagged with "memory"

How the JVM automatically reclaims heap memory — GC roots, reachability analysis, generational collection, and the major collectors (Serial, Parallel, G1, ZGC) with tuning flags.

The JVM's runtime memory layout — heap regions, stack frames, Metaspace, and per-thread vs. shared areas — and why understanding it matters for diagnosing OutOfMemoryErrors and tuning performance.

How Java's eight primitive types differ from object references — stack vs. heap, null safety, autoboxing, unboxing, and the performance tradeoffs involved.