JavaSE-No.8 - Polymorphism of the Three Features of Java

JavaSE Portal JavaSE_Start JavaSE-No.7.1 - Java's inheritance (super keyword) JavaSE-No.7.2 - Java's Inheritance (and Composition) content 1. The concept of polymorphism2. The realization conditions of polymorphism rewrite 3. Up and down transitions 3.1 Upward Transformation3.2 Downcasting instanceof 4. Rewritten design rules ...

Posted by Big X on Fri, 20 May 2022 00:12:51 +0300

Fundamentals: in depth analysis of JAVA exceptions

When an exception occurs in the method, an exception object will be created and handed over to the JVM for processing. The exception object contains the exception name, exception description and the state of the application when the exception occurs. The process of creating an exception object and handing it to the JVM is called throwing an ex ...

Posted by slindstr on Thu, 19 May 2022 10:38:24 +0300

Use of Golang-based functions

Hello, today I will share with you the content of Go Language function usage combed out. Please give us some advice. Thank you.The content of Go Language Function Use is divided into three chapters, which is the third chapter.Use of Golang-based functions (1)Use of Golang-based functions (2)Use of Golang-based functions (3)Contents of this chap ...

Posted by chrisio on Wed, 18 May 2022 19:01:20 +0300

How to Secure Your Documents with JSON Web Tokens (JWT)

How to Secure Your Documents with JSON Web Tokens (JWT) In this article, we explain how to use JSON Web Token JWT to protect online documents from unauthorized access, so that you can more securely integrate online document editor development into your own web applications. The open source office suite ONLYOFFICE Docs will be integrated her ...

Posted by shonuff on Wed, 18 May 2022 00:53:22 +0300

Introduction to Stream in Java 8

catalogue What is Stream How to create a Stream Operate on Stream Advanced Sequential flow Inert intermediate operation Execution sequence of operations summary What is Stream To answer this question, let's take a look at how the relevant JavaDoc describes: A sequence of elements supporting sequential and parallel aggregate oper ...

Posted by shergold on Tue, 17 May 2022 11:09:16 +0300

[Set framework] List, Set and Map

1, Basic points 1. A collection is similar to an array, but the number of elements in the collection can change dynamically Note: a collection can only store user-defined data types, not basic data types 2. Sets are divided into three categories List: the stored data can be repeated and in orderSet: the stored data is non repeatable and unor ...

Posted by my800stuff on Tue, 17 May 2022 01:13:38 +0300

Issue 17 - what is MySQL database? It's enough to read this dry article!

preface Why study MySQL? Because MySQL is one of the most popular relational database management systems, MySQL is the best software in web applications. The sql language used by MySQL is the most commonly used standardized language for accessing databases. Rest assured, friends who read this issue are suitable for: website development, softwar ...

Posted by keigowei on Mon, 16 May 2022 11:38:44 +0300

Spring learning notes: instantiation of Bean

catalog: 🥪 1, Instantiated Bean 🍬 1.1 environmental preparation 🍬 1.2 instantiation of construction method (common) 🍕 Step 1: prepare the class to be created 🍕 Step 2: configure the class to the Spring container 🍕 Step 3: write the running program 🍕 Step 4: provide constructor test in class 🍕 Step 5: change the constructor to private te ...

Posted by timc37 on Sun, 15 May 2022 01:17:37 +0300

Zero basis of Java syntax -- definition and use of array

Java series article directory Write once,Runanywhere.??? This article explains arrays. The knowledge explained from this article is different from that of C language. ?? ?? ?? If you think my article is helpful to you, please also [focus on praise collection]. Getting your support is my biggest motivation!!! ?? ?? ?? Copyri ...

Posted by slava_php on Sun, 15 May 2022 00:41:51 +0300

The pytest test framework combines allure to generate beautiful test reports

1. Introduction to allure allure is a lightweight, flexible, multilingual test reporting tool. Not only does it present what has been tested very succinctly in the form of a neat Web report, but it allows everyone involved in the development process to extract maximum useful information from the day-to-day execution of tests. From a developme ...

Posted by transformationstarts on Sun, 15 May 2022 00:30:16 +0300