av色欲无码人妻中文字幕,free性开放小少妇

Article Tags

Home

Technical Articles

Java

Spring Webflux vs. Kotlin: Correct execution of CRUD operations in responsive streams

This tutorial explores in-depth how to perform CRUD operations inside Mono or Flux subscriptions when developing responsive applications using Spring Webflux and Kotlin, which can cause data to not be persisted. The core is to understand the non-blocking nature of responsive programming and emphasize that side-effect operations should be avoided in subscribe callbacks. By comparing error examples and correct practices, the article explains in detail how to seamlessly integrate database operations into data streams using responsive operators such as flatMap to ensure that data persistence is consistent with responsive principles.

Aug 26, 2025 pm 12:18 PM

Gradle Multi-module Project Dependency Configuration Guide: Solving Subproject Dependency Issues

This article aims to help developers solve the problem of failure in sub-project dependencies in Gradle multi-module project construction. With detailed code examples and configuration instructions, we will dive into how to properly configure the settings.gradle file and how to declare project dependencies in the build.gradle file of the subproject, ensuring that Gradle correctly parses and builds multi-module projects.

Aug 26, 2025 pm 12:15 PM

Java Caesar password implementation: How to properly ensure spaces in text

This tutorial discusses in detail how to solve the problem of missing spaces in encrypted output when implementing Caesar passwords in Java. By analyzing common encoding errors, i.e. skipping space characters incorrectly, this article provides a modified code example that shows how to ensure that spaces are preserved during the encryption process, thereby generating more expected encrypted text. The tutorial further discusses the importance of matching character set definitions with modulo operations to help developers build more robust implementations of Caesar ciphers.

Aug 26, 2025 pm 12:09 PM

Solutions to the limitation of this reference in Java constructor and circular dependency between objects

In Java, the subclass constructor cannot refer to this before calling super() because the object has not been fully initialized at this time, especially the parent class part and final fields may not be assigned. When inter-object cyclic dependencies occur in the design, especially in the final field, it will cause a compilation error of "Cannot reference 'this' before supertype constructor has been called". Solving this problem usually requires tweaking the design, such as setting one of the circular dependencies fields to non-final and initializing after the super() call is completed, or using more flexible object creation such as builder pattern.

Aug 26, 2025 am 11:51 AM

Java Swing: The correct way to convert JRadioButton to string

In Java Swing applications, when you need to get the user selected text from the JRadioButton group, calling ButtonGroup.getSelection().toString() directly will usually get a useless object hash value. This article will explain in detail how to correctly convert the JRadioButton's selected items into meaningful strings. The core is to use the JRadioButton's setActionCommand() method to associate it with a string command, and obtain this customized string through the ButtonModel's getActionCommand() method to achieve accurate data acquisition.

Aug 26, 2025 am 11:45 AM

Solve the issue of JNA loading failure during Spring Boot image build

This article aims to help developers resolve the "Can't load library" error encountered on an M1 Mac when building a Docker image using Spring Boot, which is usually related to failed loading of the JNA (Java Native Access) library. This problem can be effectively resolved by adjusting the version compatibility of Spring Boot, Spring Cloud, and Java, ensuring smooth image building.

Aug 26, 2025 am 11:39 AM

Complete tutorial on building a Dockerfile with Testcontainers

This document is intended to guide developers on how to integrate Testcontainers during Dockerfile builds to solve the problem of running test cases that depend on Docker environments in CI or local build environments. By leveraging the socat tool, the host's Docker socket is exposed to the build environment, allowing Testcontainers to start and manage containers during the Dockerfile build phase, thereby achieving complete integration testing.

Aug 26, 2025 am 11:36 AM

Tutorial on entering string word percentages and specific pattern recognition in Java

This tutorial details how to efficiently process a collection of strings entered by a user in Java and calculate the percentage of strings that match a specific pattern such as pure letter words or words that start with capital letters. The article focuses on the collection of inputs, the application of regular expressions, the implementation of modular counting methods, and the display of final results, aiming to help readers master the key techniques of string analysis and processing.

Aug 26, 2025 am 11:27 AM

Maestro UI test run error NoSuchMethodError Solution

This article provides a solution to the problem that the Maestro UI automation test tool has an error in java.lang.NoSuchMethodError: java.io.InputStream.readAllBytes()[B] in Flutter application test. The core of this solution is to ensure that JDK 11 is installed and configured correctly and remove other versions of JDK that may cause conflict, thereby resolving the dependency problem of Maestro runtime.

Aug 26, 2025 am 11:15 AM

JNA Advanced Tutorial: How to efficiently map C language nested structures and unions

This tutorial explores the mechanism by which JNA performs complex data type mapping between Java and C, especially for scenarios containing nested structures and unions. By analyzing an actual error case, the article elaborates on JNA's strict requirements for Java class inheritance Structure or Union, and provides two core solutions: one is to directly build JNA mapping classes that correspond exactly to the C language definition, and the other is to introduce a "friendly" Java object wrapper layer to optimize code readability and maintenance, aiming to help developers avoid common pitfalls and achieve efficient and stable cross-language calls.

Aug 26, 2025 am 11:12 AM

The collaboration between the Try-Catch block and the For loop: Exception handling and loop control

Article summary: This article explores in-depth the impact of exception handling on loop execution when nesting for loops in a try-catch block. By analyzing the code examples, the different results of placing a try-catch block inside and outside the loop are explained, and a way to effectively handle exceptions in the loop and ensure normal execution of the program is provided. Mastering this technique is essential to writing robust, reliable applications.

Aug 26, 2025 am 11:03 AM

Java conditional statement optimization: improving code readability and simplicity

This article aims to help Java developers optimize complex conditional statements, especially if statements involving multiple conditional judgments. By reversing the conditions and applying DeMorgan's law, we can simplify the otherwise lengthy and difficult-to-understand code into a clearer, more maintainable form. This article will provide detailed steps and examples to help you write more elegant Java code.

Aug 26, 2025 am 11:00 AM

Spring Security OAuth2 Practical Guide to Caching Opacity Token Introspection Request

This article aims to provide a practical tutorial on caching OAuth2 opaque token introspective requests in Spring Security. When the authentication server is unstable, by customizing the OpaqueTokenIntrospector and integrating cache mechanisms such as Ehcache, the number of requests to the authentication server can be effectively reduced, thereby improving the stability and response speed of the resource server, and avoiding 401 errors caused by introspection failure.

Aug 26, 2025 am 10:51 AM

Correct practice of comparing dynamic file selection and string in Java

This article aims to explore common problems encountered in dynamically selecting files in Java, especially the misuse of string comparison (== and equals()) and File.toString() methods. The article will explain in detail how to correctly compare string contents and provide robust dynamic file path construction and verification strategies to ensure that the program can accurately read the expected files.

Aug 26, 2025 am 10:42 AM