How can I build the same calendar using Spring Initializr and Gradle?
You can take a look at this example that uses DayPilot Pro:
https://code.daypilot.org/41760/using-javascript-html5-event-calendar-in-spring-boot-java
The Maven config used in this project is very basic and you should be able to convert it to Gradle by simply running "gradle init" in the project root:
gradle init
See also: https://docs.gradle.org/current/userguide/migrating_from_maven.html#migmvn:automatic_conversion