Explain JVM Escape Analysis.

Escape analysis is a technique by which the Java Hotspot Server Compiler can analyze the scope of a new object's uses and decide whether to allocate it on the Java heap.

Escape analysis determines the object's escape state which is one of the following.

GlobalEscape: An object escapes the method and thread. For example, an object stored in a static field, or, stored in a field of an escaped object, or, returned as the result of the current method.

ArgEscape: An object that is passed as an argument to a method but cannot otherwise be observed outside the method or by other threads.

NoEscape: An object that cannot escape the method or thread at all.

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