How to configure the startup class for Spring Boot to run.

To set up the way the Spring Boot application’s startup class runs, you can follow these steps:

1. Create a new Spring Boot project or open an existing one.
2. This is a Spring Boot application.
3. To run using IDE: Locate the main class in the IDE, right-click, and select “Run” or “Debug” option to run the Spring Boot application.
4. To run using command line tools: Open the command line tool, navigate to the project’s root directory, and run the command “mvn spring-boot:run” to start the Spring Boot application.
5. After running the main class, the Spring Boot application will start and output relevant log information on the console.
6. A local server can be accessed at the following address: http://localhost:8080/

Note: In the startup class, you can make some relevant configurations such as setting the application’s port number and data source. These configurations can be done by adding the @ConfigurationProperties annotation to the startup class, and configuring them in the application.properties or application.yml file.