The innocent elementary school girl was stumped by three big guys in a row: JVM has learned this way, dare to come for an interview?

Preface

JVM has always been a mandatory test site for interviews, everyone knows it, but it doesn't seem to be particularly easy to figure it out. No, the primary school girl was beaten by the interviewer again during the interview! After all, I still suffer from insufficient skills

 

what? You said you can hang the interviewer when you go up?

Come on, let's answer the following interview questions first!

1. Memory model and partition, what needs to be put in each area in detail?
2. Partitions in the heap: Eden, survival (from + to), old age, their own characteristics
3. Object creation method, object memory allocation, object access location
4. Two judgment methods for GC?
5. What is SafePoint?
6. The three collection methods of GC: the principles and characteristics of mark removal, mark sorting, and copying algorithms. Where are they used? If you are asked to optimize the collection method, what ideas do you have?
7. What are the GC collectors? Features of CMS Collector and G1 Collector
8. When do Minor GC and Full GC happen respectively?
9. Several commonly used memory debugging tools: jmap, jstack, jconsole, jhat
10. Several processes for class loading?
11. JVM memory is divided into several areas, what is the role of each area?
12. How to judge whether an object is alive? (or how to judge GC objects)
13. Briefly describe the java garbage collection mechanism?
14. What are the methods of garbage collection in java?
15. java memory model?
16. java class loading process?
17. Briefly describe the java class loading mechanism?
18. The class loader parent delegation model mechanism?
19. What are class loaders and what are the class loaders?
20. Briefly describe the java memory allocation and recovery strategy and Minor GC and Major GC?

Can't answer it! It may be that you haven’t learned enough. The editor has prepared an exceptionally generous gift package for you and the primary school girl :

• JVM combat manual
• JVM design principle and implementation
• JVM advanced features and best practices
• JVM fault diagnosis and performance optimization
• JVM performance optimization knowledge points finishing

how about it? Rich enough! The following editor will show you in detail, and interested friends can receive VX for 100% free!

JVM combat manual

The book is divided into five parts: Approaching Java, automatic memory management mechanism, virtual machine execution subsystem, program compilation and code optimization, and efficient concurrency. Each part is basically independent of each other, and there is no inevitable dependency

first part

 

 

 

the second part

 

 

 

the third part

 

 

fourth part

 

 

 

the fifth part

 

 

Due to the space of the platform, only part of the catalogue and content will be displayed later. Interested friends can receive it for free by adding the VX of primary school girl

JVM design principle and implementation

table of Contents

 

 

 

content

 

 

JVM advanced features and best practices

table of Contents

 

 

 

 

content

 

 

JVM fault diagnosis and performance optimization

table of Contents

 

 

 

 

content

 

 

JVM performance optimization knowledge points finishing

table of Contents

 

 

content

 

 

At last

how about it? This gift package is rich enough! After reading it, I can’t hang the interviewer, I just stand upside down and wash my hair.

Don't know how to get it yet? Elementary school girl VX is waiting for you! ! !