garbage collection in java interview questions

How can I determine whether an object is alive during JAVA garbage collection? One method is reference counting, but this method cannot solve the problem of circular reference. The other method is root set search, which searches for all reachable objects from the root set, the content of the root set includes all references in the stack, static attribute referenc

What are the benefits of understanding the garbage collection mechanism (GC) for Java developers? The first thing you can do is to satisfy your curiosity as a software engineer, and second, to learn more about how GC works can help you write better Java applications.This represents only my personal opinion, but I belie

are naturally at the bottom of the memory at the previous compression stage, where the object's movement is actually performed by the thread assigned to the target area, rather than the source region (region).Low occupancy cheese. Summary Parallel recycling divides the heap into four spaces: Eden, two survivor space (survivor spaces), and older generation space (tenured). Parallel recycling uses parallel, copy collectors to reclaim Eden and survivor space (survivor spaces). Different algorithm

In Java, when there is no reference to the object, it becomes garbage, and if it is not reclaimed in time, freeing up the memory, the garbage will accumulate more, and eventually out of MEMORY!,JVM will end up running.Some people wonder: we usually code when not show the destruction of objects, how the program run well?This is to talk about today's protagonist, t

invokes the Fnalize () method of the recoverable object used, and if there is a reference variable referencing the object, the object becomes up to the state again.Unreachable state: When the contact of the object and the referenced variable is severed, and the system has called the Finalize () method of the object, the object has not been made reachable. At this point the object enters the unreachable state, and the resource used by the object is not started to be reclaimed until the object is

Java Automatic garbage collection (Automatic garbage Collection) is an automatically reclaimed memory that is no longer used on the heap , and new objects are recycled if they are not referenced in the program. There are many implementations of recycling, reference counting

The Java garbage collection essence is divided into 4 parts, this is the 3rd part of this article. In part 3rd, the serial collector, the parallel collector, and the concurrency Token cleanup collector (CMS) are described.Serial collector (Serial Collector)The serial collector is the simplest collector and is a great choice for single-processor systems. Of course

Garbage collection, like a double backgammon, takes only a few minutes to learn, but it takes a lifetime to master. Ben Evans, a senior trainer and advisor, discussed garbage collection from a basic perspective in the presentation of visual garbage

1. Java's garbage collection mechanism works mainly on determining which objects are garbage, reclaiming the space occupied by useless objects, and keeping the surviving objects in the heap tightly aligned.2. Java Garbage collection