The following class explains how to create a simple Spring Boot launch class. It uses the static run method from the SpringApplication class, as shown in the following code snippet:

    package com.mastering.spring.springboot; 
    import org.springframework.boot.SpringApplication; 
    import org.springframework.boot.
    autoconfigure.SpringBootApplication; 
    import org.springframework.context.ApplicationContext; 
    @SpringBootApplication public class Application {
       public static void main(String[] args)
        { 
         ApplicationContext ctx = SpringApplication.run 
         (Application.class,args); 
        }
     }

The preceding code is a simple Java main method executing the static run method on the SpringApplication class.