You can design form via <form> in html . You can call servlet via Ajax once submit button clicked. Prepare Java code for database connection and related logic.

Just replace mode ="merge"

Please check if you have multiple OSGi configurations for Error logs. It should not redundant and run mode specific.

Hi abhilash , Please follow https://github.com/graphql-java/graphql-java-examples to get more help.

we need to decide first the criteria for the most popular. Like most_visited_count in page properties so we can fetch and display data according to criteria.