Get to know JVM (take you to know JVM from different perspectives)

summary When it comes to the three letters of JVM, what first pops out of your mind? I generally analyze the following three kinds of people: The first one: I know the three letters of JVM separately. I don't know what it isSecond: isn't it a Java virtual machine that runs Java programsThe third kind: it is divided into heap memory, method ...

Added by TNIDBMNG on Wed, 19 Jan 2022 00:10:02 +0200

The of Java graphical interface programming -- Swing

1. Swing overview Swing is implemented in 100% pure Java and no longer depends on the GUI of the local platform, so it can maintain the same interface appearance on all platforms. Swing components that are independent of the local platform are called lightweight components, while components that depend on the local platform are called heavywei ...

Added by Fazer on Tue, 18 Jan 2022 22:14:04 +0200

2022-1-14 Niuke C + + Project -- exec function family learning

Questions for review: 1. What is a function family? 2. What is the function of exec function family? 3. What will happen if exec is used in the parent process function? What better way? 4. execl function, execlp function Function families are functions with the same or similar functions. Because there is no function overload in C language, fun ...

Added by burhankhan on Tue, 18 Jan 2022 20:37:17 +0200

Java series notes 16 - Reflection

reflex Class loader When the program wants to use a class, if the class has not been loaded into memory, the system will initialize the class through three steps: class loading, class connection and class initialization. If there are no accidents, the JVM will complete three steps in succession, so sometimes these three steps are collectively ...

Added by fuzz01 on Tue, 18 Jan 2022 17:58:54 +0200

Written a class roll call system in python

Introduction: Hello, iron juice ~ I brushed such a short video on the subway today. I wonder if I can write a similar class roll call program. The idea can't stand waiting. Just write it~ 1, Preparatory work 1.Tkinter Tkinter is Python's built-in TK GUI tool set. TK is the native GUI Library of Tcl language. As a graphic design tool of ...

Added by nicolam1 on Tue, 18 Jan 2022 16:42:22 +0200

[Python] upload the python package to the pypi official website

  I summary In the last [crawler] article on deploying Scrapy to k8s, it was mentioned that errors were reported in the custom , spiderkeeper , image, so I submitted a , python , package called , spiderkeeper new , based on its source code to the , pypi , official website. This article will record the whole construction process and ...

Added by konqest on Tue, 18 Jan 2022 13:22:59 +0200

C language beginner - pointer

Today, we are going to learn about pointers in C language. Pointer can be said to be a heavy role in C language. We can understand and master pointer. In the future, when we write code, we feel like a fish in water and at ease. Next, let's have a look!!! Contents of this chapter: 1. What is the pointer? In computer science, a pointer is an ob ...

Added by ryan.od on Tue, 18 Jan 2022 13:10:35 +0200

Node.js learning 5 (events)

1, Node JS event loop        Node.js is a single process and single thread application, but because of the asynchronous execution callback interface provided by V8 engine, a large number of concurrency can be handled through these interfaces, so the performance is very high.     &nbs ...

Added by aufkes on Tue, 18 Jan 2022 12:36:18 +0200

How does SpringBoot use prefix trees to filter sensitive words

1, Prefix tree Generally, when designing websites, there will be problem publishing or content publishing functions. A very important point of these functions is how to realize sensitive word filtering. Otherwise, there may be bad information publishing, or the published content may contain code fragments with malicious functions. The basic al ...

Added by j0n on Tue, 18 Jan 2022 10:08:00 +0200

WinForm framework development - debugging of custom control development and state processing of DesignMode

In development Winform When programming, we often need to make some custom control modules as needed, so that we can reuse the system modules or achieve better results. However, when using, we often find some inexplicable errors at the design time, so how should we develop and debug the control design time, and how to solve the errors at the de ...

Added by piznac on Tue, 18 Jan 2022 08:31:36 +0200