Course Introduction："Loading class com.mysql.jdbc.Driver ... is deprecated"Question:What is the reason behind the warning message "Loading class...
2024-12-10 comment 0 438
Course Introduction：The Java class loading mechanism is the core of the runtime, and understanding it helps to troubleshoot class conflicts, class failure, and other problems. Its basic process is divided into three stages: loading, linking (verification, preparation, parsing) and initialization, and is loaded on demand using LazyLoading. Class loaders include BootstrapClassLoader, ExtensionClassLoader, ApplicationClassLoader and custom class loaders, and use the parent delegation model to ensure uniqueness and security. Frequently asked questions include ClassNotFoundException, NoClassDefFoundError, class duplicate loading, resource leakage, etc. Use suggestions include checking
2025-07-19 comment 0 879
Course Introduction：Java's class loading is a mechanism for JVM to load classes dynamically at runtime. Its core works by three class loaders at hierarchy and delegate model. 1. BootstrapClassLoader is responsible for loading the core class library; 2. ExtensionClassLoader is used to load the extension library; 3. ApplicationClassLoader loads classes in the application classpath. Class loading adopts on-demand loading strategies, which helps reduce memory overhead and improve startup efficiency. It is particularly critical in large applications (such as Spring, OSGi), web servers and plug-in systems, and can realize dynamic loading and isolation of classes. If the configuration is not correct, ClassNotFoundEx may be triggered
2025-06-30 comment 0 664
Course Introduction：Determining the Source of Class Loading in JavaWhen working with extensive classpaths, manually locating the source of class loading can be a...
2024-12-06 comment 0 576
Course Introduction：PHP provides an input basis for AI models by collecting user data (such as browsing history, geographical location) and pre-processing; 2. Use curl or gRPC to connect with AI models to obtain click-through rate and conversion rate prediction results; 3. Dynamically adjust advertising display frequency, target population and other strategies based on predictions; 4. Test different advertising variants through A/B and record data, and combine statistical analysis to optimize the effect; 5. Use PHP to monitor traffic sources and user behaviors and integrate with third-party APIs such as GoogleAds to achieve automated delivery and continuous feedback optimization, ultimately improving CTR and CVR and reducing CPC, and fully implementing the closed loop of AI-driven advertising system.
2025-07-25 comment 0 855
Course Elementary 17931
Course Introduction："PHP Fun Class" happily takes everyone to learn PHP, making learning programming less scary. Learning programming is not a scary thing. This class will make learning PHP quite simple and interesting! !
Course Elementary 36828
Course Introduction："PHP Fun Class" makes learning PHP like playing a game, developing, fighting monsters, and breaking through levels, making learning programming no longer a scary thing, but fun and simple! If you find it difficult to learn PHP, then this course is very suitable for you to learn!
Course Elementary 25546
Course Introduction：Lecturer: php Chinese website-Teacher Zhu (Peter Zhu) Time: 2019.10.17 20:00-22:00 Topic: How to learn a new technology efficiently? Specific content: 1. In 2020, what other new technologies are worth learning? 2. How to learn front-end development efficiently? 3. How to learn PHP development efficiently? 4. Introduction and demonstration of new functions of phpStudy V8 5. Xiaopi panel function introduce
Course Intermediate 38853
Course Introduction：1. Date: October 17th (Wednesday) to October 20th (Saturday); 2. Time slot: Morning session (10:00 ~ 12:00), Afternoon session (15:00 ~ 17:00); 3. Topic: Full-stack development experience sharing for PHP programmers 4. Purpose: Example demonstration, full recording, easy to understand, public welfare and practical 5. Lecturer: Peter_Zhu, Miejie Shitai, Ouyang Ke, Ximen Daguanren Interested friends, please join the QQ group: 929746523 to participate in the exchange!
Course Intermediate 34561
Course Introduction：How php+mysql+mvc works
Please advise on PHP class library loading rules
2017-05-27 17:43:28 0 3 707
Small questions about the automatic loading of Dugu Jiujian class __autoload()
2017-08-09 00:06:19 0 2 1307
In php, the class name::class, what does it mean?
I would like to ask: In the following PHP code, what does the class name::class mean? {code...}
2017-06-30 09:54:29 0 2 1013
2017-07-07 10:34:10 0 3 1578
