JVM husimamia kumbukumbu kiotomatiki — ikitenga objects na kuachilia zisizofikika kupitia garbage collection (GC) — ili usilazimike kuachilia kumbukumbu mwenyewe. Kuelewa maeneo ya kumbukumbu na tabia ya GC ni ufunguo wa kurekebisha utendaji na kutambua matatizo ya kumbukumbu.
Maeneo ya kumbukumbu ya JVM
HEAP — where all OBJECTS live (shared across threads), GC operates here
├── Young Generation — new objects (most die young)
│ ├── Eden — new allocations go here
│ └── Survivor — objects that survived a young GC
└── Old (Tenured) Gen — long-lived objects (promoted from young)
STACK — per-thread; method frames, local variables, primitive locals, references
Metaspace — class metadata (replaced PermGen in Java 8+)
