Java Heap Generations: Young, Old, and Removed Permanent Generation
Understanding the concept of Java heap generations is crucial for optimizing memory management. The Java Virtual Machine (JVM) divides the heap into three primary generations: young, old, and permanent.
Young Generation
The young generation holds newly created objects. It consists of two subspaces: Eden and Survivor.
Old Generation
The old generation holds objects that have survived multiple garbage collections in the young generation. Objects that persist for an extended period are retained here.
Permanent Generation (Removed)
The permanent generation, present in Java 6 and earlier, is no longer part of the heap in Oracle's JVM. It held class definitions and other related data. In Java 7 and later, interned strings reside in the main object heap instead.
Interactions Between Generations
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