How do I get started with swagger-ui

Swagger UI is a tool that takes Swagger specification files, presents them visually and allows you to execute operations.

Swagger itself is a specification to document and describe REST APIs. The specification can be found here - https://github.com/swagger-api/swagger-spec/. The repository contains the specification itself, json schema, samples and so on. The main README of the repository also points you to additional tools including libraries and frameworks to produce your specifications.

When it comes to creating Swagger specification, you can use one of the frameworks and integrate it with existing code to auto-generate such documentation.

If you don't have an existing application or would rather document it manually, you can use the Swagger-Editor tool or the text editor of your choice.

maven dependency:

    <dependency>
         <groupId>io.springfox</groupId>
         <artifactId>springfox-swagger2</artifactId>
         <version>2.4.0</version>
    </dependency>  
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.4.0</version>
    </dependency>

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@Configuration
@EnableSwagger2   
    public class SwaggerConfig {

        private static final String SEARCH = "spring-rest-swagger";

        @Bean
        public Docket myApp() {
            return new Docket(DocumentationType.SWAGGER_2).groupName(SEARCH)
                    .apiInfo(apiInfo()).tags(new Tag(SEARCH, "spring-rest-swagger API"));
        }

        private ApiInfo apiInfo() {
            return new ApiInfoBuilder().title(SEARCH).build();
        }
    }

==============================================================================

for reference use below link:(step by step explanation)

https://www.youtube.com/watch?v=xeYpiHLpme0&t=1s