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 0 429
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 0 840
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 0 638
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 0 568
Course Introduction：Java's class loading delegate model is a hierarchical structure mechanism that ensures that classes are loaded by the most trusted class loader. 1. BootstrapClassLoader loads core Java classes (such as java.lang, java.util); 2. ExtensionClassLoader is responsible for loading classes in the extension directory and delegating BootstrapClassLoader; 3. ApplicationClassLoader loads classes in the application classpath and delegates ExtensionClassLoader. When the class needs to be loaded, the request starts from the ApplicationClassLoader and goes up step by step
2025-06-29 comment 0 416
Course Elementary 17862
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 36747
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 25491
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 38767
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 34497
Course Introduction：How php+mysql+mvc works
Please advise on PHP class library loading rules
2017-05-27 17:43:28 0 3 703
Small questions about the automatic loading of Dugu Jiujian class __autoload()
2017-08-09 00:06:19 0 2 1287
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 1002
2017-07-07 10:34:10 0 3 1556
