Use ArticleRepository as Spring Data JPA repository and inject it into Articleservice.

Configure the Article class as a Hibernate entity. It should correspond to the article $$ table in the database.

Implement a findById $$ method $-$ it should return the article with the given id if it exists in the database, or return an empty article otherwise.

Implement a findByTitle ra method $-$ it should return list of articles with title containing given argument

Implement a create $r$ method $-$ it should insert an article into the database and return its generated id$.$ existing article. If there is no article with the given id$,$ you should throw a RuntimeException rith withessage "Article not found".

Implement a delete ra method that allows an article to be deleted.

Add validation to the create $[$a and update methods check whether content does not contain any words defined in the blacklist. The blacklist is defined as a configuration property articles.blacklist in which contains comma$-$separated words, for example: banned$\_$word$1,$ banned$\_$word$2$ if$.$ If validation fails, throw a Runt imeException a with message