Programmer Think

object-oriented I Construction method 1. Question: we have never written a constructor in the class before, but we can still create objects. Where is the constructor used? be careful: 1,If we don't give a construction method, JVM Automatically provides a construction of an empty method body without parameters method 2,If we give a con ...

In the last article, we had a preliminary understanding of the concept of C language. In the next series of articles in the beginning of C language, we will step closer to C language and see what tricks we can make. Just like learning to drive a motor vehicle, we already know what a car is, what parts it has, and some necessary traffic rules. N ...

Java basic syntax notes Annotation is a description of program functions, marked with a specific symbol, and the program will not execute annotation during operation. //Single-Line Comments /* multiline comment */ /** *Document comments can be prompted when called */ keyword Definition: a string given special meaning by the Java lan ...

The follow-up content is in the notes on basic learning of Java SE 2, which has not been completed The content is a little messy, there may be errors, and it will be modified frequently Recommended dark horse Java Tutorial Station B link Java characteristic Interview may ask Object oriented cross platform is the most important Three basi ...

Pulsar, a popular messaging middleware recently, wanted to learn. I found that many articles on the Internet introduce performance and compare Kafka, and there are few articles on practice! So I practiced with the official documents and wrote this article, which is estimated to be the first pulsar actual combat article in China. I hope it will ...

previously on The last article has introduced the design process of the front-end project and how to use HbuilderX to run wechat applet. At the end of the article, I briefly introduced the method of requesting data from the back-end java project with ajax. Let's take a look at this article in detail! Before reading this article, let's take a ...

brief introduction Why do I suddenly want to do this, or is it because the memory of the mobile phone is a little small, and it is not very convenient to use the computer to read the learning materials on the computer directly, or do I want to use the mobile phone directly, which gave birth to this idea. After all, as a new youth in the ne ...

I reflex 1. Concept Reflection: it means that our program can get Class Object, go"reverse"Loading of"A class"，And create an object and call its properties and methods. Function: Unlock the relationship between classes"Coupling relationship"，It is conducive to the later development and maintenance of the program!!! 2. Class loader 1. Cla ...

Java notes 4: reuse classes Source: Java Switch statement (detailed usage) - java Tutorial - PHP Chinese network Class is the code organization unit in OOP programming. Whether it is OOP class or process oriented function, its purpose is to realize code reuse. There are two ways to realize code reuse through classes: Inheritance and compos ...

preface introduce The previous article has completed the call between services, but how can we implement the interface of external calling services. First of all, we can call it by directly calling the public network ip + port. This method is certainly feasible, but it must be unsafe to expose the ip and port directly. In case someone hac ...