Blog: bugstack.cn

Precipitation, share, grow, let yourself and others can gain something! 😄

One, foreword

1. Congratulations on getting 40k downloads!

“Relearning Java Design Patterns” PDF, my second e-book, has been downloaded 40 thousand copies so far. This is a book to learn the design mode of actual combat real scene coding, the book involves 22 real scenes such as trading, marketing, ordering, seconds kill, rules engine and middleware, a total of 180,000 words 271 pages, time-consuming 50 days to finish! Download instructions are provided at the end

Of course, the promotion of this book is not without the support of fans, but also thanks to my main friends to help reprint and share. There are also users who use this book for their own fanbase, and thank you for promoting this book so that more people can learn useful design patterns.

2. You need a good body to move on!

October 4, finally from the hospital 🏥 drive 250 kilometers back from zhangjiakou! It is really not easy to accompany a bed in the hospital, but it is not a troublesome disease, just do a minimally invasive lumbar disc. Hahaha, everything is fine, except that I haven’t showered in days and haven’t taken off my clothes to sleep. In addition to the basic simple nursing in the hospital, basically are idle. But I couldn’t stay still and finally turned on the computer, just like the following!

3. A PDF for Java face book!

Do let understand is really understand! This is by no means a simple interview manual, nor is it a simple interview question. Instead, the interview scenario is used to explain the core knowledge of Java in depth, just as the core knowledge can be deeply understood after learning: HashMap disturbance function to make hash more uniform, ThreadLocal using Fibonacci golden division hash, the use of double-endian queue, the relationship between red-black tree and 2-3 tree, shuffling algorithm and so on.

Second, the introduction of

Hello, World of Java! Hello, world of Java coding!

Welcome here. I’m glad you got the book. If you can stick to reading and according to the practical examples in the book to learn, then there will be very profound harvest.

This is a book that explains the core of Java in the name of an interview, many of the things you normally use, but may have missed many of the details. For example, HashMap’s perturbation function makes hash more uniform, and ThreadLocal hashes can use Fibonacci’s golden fraction, etc., all of which are covered in practical depth in this book.

Let understand is really understand

Let understand is really understand, is the core purpose of this book. Every knowledge point that needs in-depth understanding is analyzed from the most basic principle. Then through practical and verifiable examples, to learn these core knowledge points, so that the learning content can be simple, but also can be more in-depth.

1. Are interviews really just rocket building?

It is often said that the interview builds the rocket and the induction turns the screw. But do you really have the ability to build rockets? Most of them are self-mockery of their knowledge blind spots, technical bottlenecks and inexperience.

During the interview:

  • I hope you understand data structures, because you’ll be much more comfortable with HashMap, ArrayList, and LinkedList.
  • I hope you know hashing algorithms, because then you’ll have a lot of choices when you’re designing routes;Division and hash,Square hash,The Fibonacci hash methodAnd so on.
  • I hope you know the open source code, because this way you can quickly locate problems and possibly create some middleware for system services to better decouple the system.
  • I hope you understand design patterns, because that way you can write scalable, maintainable programs that will make the whole team better.

So, CRUD never chose you, nor did screw making make you a tool man. It’s your technical ability that determines your vision, and that vision determines the code you write!

2. Fit the crowd

  1. Have a certain programming foundation, working more than 2 years of r & D personnel
  2. I hope to break through the bottleneck period of my own stage and have more in-depth technical growth
  3. Willing to become an architect, but unable to find a direction
  4. Interview for a job, chatter the most malicious crack, take the most expensive offer

3. What can I learn

  1. Learn data structures and algorithms for common Java apis
  2. In-depth study of disturbance function, load factor, red black tree, Fibonacci and other core knowledge points
  3. Break the learning bottleneck, let the practice of learning ideas, to increase their knowledge

4. Read the advice

Xiao Fu ge, the series of special articles are inclined to practice, the content of each chapter has the corresponding case code as verification. So the process of learning is best to experiment with your own hands, so that you can learn more deeply the essence of the book. Do everything personally, come on!

Download PDF📚

Before downloading, a little support for the original author is requested at 😬, like, view, share, comment, praise, and complete any of them to receive 🉐.

1. The available content includes

  1. Java Face Book ManualA PDF Book
  2. The book learns a set of corresponding source code cases
  3. Read the materials online

2. Obtaining method

I have written three PDF books, all of which you can follow:Bugstack wormhole stackreplyThe following password, to download!

  1. Java Face Book Manual, the official account replies:Surface by manualTo get the download link.
  2. Relearning Java Design Patterns, the official account replies:Design patternsTo get the download link.
  3. Bytecode Programming, the official account replies:Bytecode programmingTo get the download link.
  4. You can also add xiaoFuge wechat (fustack) Join study groups and mingle.

Four, close a tail 🎉

Let understand is really understand!

The most important thing to learn programming is not to memorize theories and results, nor to frantically collect information and memorize answers for interviews. None of this will get you very far and can backfire. If you make a mistake, it’s easy to find out!

And for our coding line, if you don’t want to be eliminated by this industry, it is almost need to learn every day! Especially feel oneself arrived certain bottleneck period, grow up very hard again when. When is the bottleneck? If you can’t pass ali’S P7, also can’t pass JINGdong’s T7, etc., some higher threshold positions in the Internet industry, then it is in a technical bottleneck period.

Time management? Think of yourself as having little time management and not having played a game in a year. Most of my time will be devoted to my own study, sorting out materials, writing articles and technical exchanges. In particular, I have made great technical progress and made good writing progress by combing the data and writing blog. This is my biggest harvest in the past year!

Finally, this is not the end of the manual, the follow-up will continue! Precipitation, share, grow, let yourself and others can gain something!