What is name of the configuration file which you use in Spring b

In Spring Boot, the default configuration file is named application.properties or application.yml. These files are used to define configuration properties for your Spring Boot application. They are typically located in the src/main/resources directory of your project.

Here's a brief overview of each file format:

1. application.properties: This is a plain text file where configuration properties are specified using the key=value format. For example:

   server.port=8080
   spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase
   

2. application.yml: This is a YAML (YAML Ain't Markup Language) file format where configuration properties are specified using a hierarchical structure. For example:

   server:
     port: 8080
   spring:
     datasource:
       url: jdbc:mysql://localhost:3306/mydatabase
   

Both file formats serve the same purpose of configuring your Spring Boot application. You can choose whichever format you prefer based on your personal preference or project requirements. Additionally, you can use profile-specific configuration files such as application-{profile}.properties or application-{profile}.yml to define properties specific to different environments or profiles.