Java

Java experiment – define a class Student that represents student information, the requirements are as follows:

02/02/2024 Java 0

Table of contents 1. Topic requirements 2. Problem-solving ideas 3. Specific code 4. Run screenshots 1. Topic requirements Define a class Student that represents student information. The requirements are as follows: (1) Member variables of class Student: sNO represents the student number; sName represents the name; sSex represents the gender; sAge represents the age; sJava: represents the Java cou... »

JAVA Exercise 73-III. Printing Binary Tree from Top to Bottom III

30/01/2024 Java 0

Please implement a function to print the binary tree in zigzag order, that is, the first line is printed in order from left to right, the second layer is printed in order from right to left, the third line is printed in order from left to right, and the others are printed in order. And so on. For example:Given a binary tree: [3,9,20,null,null,15,7],        3       /  \     9   20    /  \  15   7 R... »

“New Semester, New FLAG” Breaking the Limit

26/01/2024 Java 0

Example: #new semester, new FLAG# 1. Self-introduction I am a senior in college and am currently doing an internship. I am pushed by life. I feel that, in terms of the overall employment environment, no matter which direction, there are the following aspects that need to be mastered: programming language, database language, and web language. These are all basics. You must learn them well so that y... »

Kotlin learning path (2): control flow

23/01/2024 Java 0

Article directory 1. Basic control statements1.1 if expression1.2 when expression 2. Loop statement2.1 for loop2.2 while loop and do..while loop 3. Label3.1 Basic applications3.2 Implicit use of labels 1. Basic control statements The following mainly understands the basic control statements of Kotlin: if, when statements 1.1 if expression Kotlin’s if expression is basically the same as Java&... »

From shallow to deep, I will take you through the three ways to implement array expansion in Java [recommended collection]

19/01/2024 Java 0

Table of contents 1. Create a new array and move the contents of the original array to the new array.2.Use system.arraycopy()3. Use java.util.Arrays.copyOf() 1. Create a new array and move the contents of the original array to the new array. The idea of ​​​​implementing this method is: first create a new array (the prerequisite is that the length is longer than the original one), and then move the... »

Multi-threaded learning

16/01/2024 Java 0

Multi-threaded learning 1. Concept Program·Process·Thread A process refers to the execution process of a program. A process has multiple threads. That is, a task can be understood as a thread, and a thread is the unit of CPU debugging and execution. 2.Preliminary preparation Configure the commons io toolkit, which provides a large number of file-related classes Search commons io on Baidu and choos... »

Microservice design guidance – redis double cache design solves the problem of an app version check API result causing a system crash

09/01/2024 Java 0

background I actually encountered this problem in 2016. APPs or mini-programs have a version check to facilitate forced updates of the APP on the front end. It is also suitable for matching user protocols and message push protocol versions required for personal information security in the backend and the to c frontend for verification. It is just an API. This API will interact with the homepage an... »

Vue learning from beginner to advanced (20,000-word collection)

05/01/2024 Java 0

write in front A few days ago, I discovered a giant artificial intelligence learning website. It is easy to understand and humorous. I can’t help but share it with everyone:Artificial Intelligence Learning Website Vue write in frontPrefaceThree installation methods of Vue.js1. Vue import2. Vue basic syntax1.Hook function2. Interpolation expression3. Display data (v-text and v-html)4. Data two-way ... »

To merged Charts

02/01/2024 Java 0

import java.util.ArrayList; import java.util.LinkedList; public class TestTwo { //To merged Charts: //The code is as follows: public static void main(String[] args) { //ArrayList: ArrayList<Integer> Fir=new ArrayList<>(); Fir.add(5); Fir.add(2); Fir.add(0); ArrayList<Integer> Sec=new ArrayList<>(); Sec.add(6); Sec.add(0); Sec.add(2); Sec.add(5); ArrayList<Integer> mer... »

Vue learning from beginner to advanced (20,000-word collection)

29/12/2023 Java 0

write in front A few days ago, I discovered a giant artificial intelligence learning website. It is easy to understand and humorous. I can’t help but share it with everyone:Artificial Intelligence Learning Website Vue write in frontPrefaceThree installation methods of Vue.js1. Vue import2. Vue basic syntax1.Hook function2. Interpolation expression3. Display data (v-text and v-html)4. Data two-way ... »

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