Explain the virtual machine in detail!JD.com produced HotSpot VM source code analysis notes (with complete source code)

Written at the front

There is such a sentence: learning Java is not afraid of finding a job, Java has good employment prospects, there are many jobs, and entry is fast... But is this really the case?Why is it obvious that

job vacancies can't recruit suitable people

?Why do many

students of Java have no unit to employ

?The answer is one word: volume!The company's requirements for Java development have become higher, and you must not only know how to use many things, but also know the principles, otherwise we will not talk about it~

For example, we are also the most widely used now.The guy who eats Java programmers - (HotSpot VM), you are certainly not unfamiliar with it; today's enterprises like to investigate virtual machines in depth.If you can deeply understand the operation principle of HotSpot VM, you can write more efficient Java code, and at the same time, you can better troubleshoot a series of problems such as Java performance bottlenecks. During the interview, you will not just stay at the stage of using it.It can also be tougher when it comes to negotiating salary!

Of course, if you don’t know much about this piece and don’t know where to start, you might as well take a look at the JD.com’s internal strong push HotSpot VM source code analysis notes that LZ will show you next~

JD.com strongly pushes HotSpot VM source code analysis notes

The notes are based on the popular industrial-grade Java virtual machine HotSpot, analyze the source code of its basic function modules in detail, and combine a large number of examples and illustrations to help you better understand the content.The space limit only shows part of the content. Friends who need the full version can click in to find out, click

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• Directory List

hotspot vm concept analysis

Class loading, constant pool, linking, initialization, object creation process

Garbage Collection and Java Reference Type Resolution

• Content Excerpt

Parent delegation mechanism of class

pseudo-shared

Data structure of metaspace

Allocate memory on the heap

Virtual reference

Finally

Friends who need the full version can click in to find out, click

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