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The implementation principle of AtomicLong is consistent with AtomicInteger, except that one is for long variables and the other is for int variables. How does the AtomicBoolean class update the boolean variable? The core method is compareandset method, and its source code is as follows: public final boolean compareAndSet(boolean expect, bool ...

import hue.edu.xiong.volunteer_travel.core.Result; import hue.edu.xiong.volunteer_travel.core.ResultGenerator; import hue.edu.xiong.volunteer_travel.model.*; import hue.edu.xiong.volunteer_travel.service.SystemService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.domain.Page; import org.sp ...

@Override public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { } @Override public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { String editable = evPwd.getText().toString(); String regEx = "[^a-zA-Z0-9]"; //Only letters or numbers can be entered Pattern p = Pattern.co ...

In the previous article [software testing], 0 basic pure Xiaobai can also write python. Nanny level tutorial (III) shares the basic knowledge of Python. We will continue to share other contents this time. catalogue 1, List 2, List element NEW 3, List element modification 4, Query list elements 5, Other actions for the list 6, List sortin ...

package Concept: It is a way to organize classes, which can ensure the uniqueness of classes create package Click new under src package and then package to create a package. Creating a new java class under the created package will create a class. matters needing attention: 1. Add a package statement at the top of the file to specify whic ...

Jetpack Compose does not have an official Banner control at present, so it can only be completed by writing and searching some materials. Thank you very much for sharing these contents before. design sketch accompanist group Library accompanist The group library aims to provide supplementary functions for jetpack composition. There are ma ...

Spring Boot starter We know that Spring Boot greatly simplifies the initial construction and development process of the project, which are completed through the starter provided by Spring Boot. Pinda general permission system is developed based on Spring Boot, and some basic modules are starters in essence, so we need to have a comprehensive a ...

ECMAScript 6 adds perfect support for Promises/A + specification, namely Promise type. Once launched, Promise became very popular and became the dominant asynchronous programming mechanism. All modern browsers support ES6, and many other browser API s are based on ES6.Promise is a new reference type in ECMAScript 6, which indicates the final co ...

prefaceIn the previous article, we introduced the basic knowledge of View and the implementation of View sliding. This article will bring you a core knowledge point of View, event distribution mechanism. Event distribution mechanism is not only a core knowledge point, but also a difficulty in Android. Let's analyze the transmission of events fr ...

A component specification (server-side Java application) developed by sun company to expand the functions of web server. It is independent of platform and protocol, and can generate dynamic web pages. It acts as an intermediate layer between client requests (web browsers or other HTTP clients) and server responses (databases or applications on ...