How to Hide Credentials in Spring Boot

Too Long; Didn't Read

Spring boot make it easy to create spring applications. It makes it easier and faster to set up, configure and run the web application. When I was working on one of the projects, I was required to use some credentials. But I can't use it directly in the code. It should be hidden and still accessible. We know that we can add the variable in the application.properties file and then use it in the java code. But we can import a file in theApplication.properties and use the variables.