Performance comparison of different Java frameworks: REST API request processing: Vert.x is the best, with a request rate of 2 times SpringBoot and 3 times Dropwizard. Database query: SpringBoot's HibernateORM is better than Vert.x and Dropwizard's ORM. Caching operations: Vert.x's Hazelcast client is superior to SpringBoot and Dropwizard's caching mechanisms. Suitable framework: Choose according to application requirements. Vert.x is suitable for high-performance web services, SpringBoot is suitable for data-intensive applications, and Dropwizard is suitable for microservice architecture.

Answer: Java backend framework and Angular frontend framework can be integrated to provide a powerful combination for building modern web applications. Steps: Create Java backend project, select SpringWeb and SpringDataJPA dependencies. Define model and repository interfaces. Create a REST controller and provide endpoints. Create an Angular project. Add SpringBootJava dependency. Configure CORS. Integrate Angular in Angular components.

The Template Method pattern defines an algorithm framework with specific steps implemented by subclasses. Its advantages include extensibility, code reuse, and consistency. In a practical case, the beverage production framework uses this pattern to create customizable beverage production algorithms, including coffee and tea classes, which can customize brewing and flavoring steps while maintaining consistency.

Java frameworks integrated with AI enable applications to take advantage of AI technologies, including automating tasks, delivering personalized experiences, and supporting decision-making. By directly calling or using third-party libraries, the Java framework can be seamlessly integrated with frameworks such as H2O.ai and Weka to achieve functions such as data analysis, predictive modeling, and neural network training, and be used for practical applications such as personalized product recommendations.

Java frameworks are combined with edge computing to enable innovative applications. They create new opportunities for the Internet of Things, smart cities and other fields by reducing latency, improving data security, and optimizing costs. The main integration steps include selecting an edge computing platform, deploying Java applications, managing edge devices, and cloud integration. Benefits of this combination include reduced latency, data localization, cost optimization, scalability and resiliency.

The Java framework helps agile development and improves development efficiency and code quality by providing automated testing, continuous integration, event-driven architecture and other functions. In addition, the Java framework supports DevOps practices such as infrastructure as code, continuous deployment, monitoring and observability to achieve efficient software delivery, ensure environment consistency and rapid fault handling.

In real-time web applications, the performance of the Node.js framework (Socket.IO) is better than the Java framework (SpringBoot). Node.js’ Socket.IO can handle over 1500 messages per second, and Java’s SpringBoot can handle over 1000 messages per second.

The difference between the Java framework and other programming language frameworks is that it is specially designed for Java; runs on the Java virtual machine; has a huge ecosystem; and has better performance than interpreted language frameworks.