data

Entity @Entity - marks class as the database entity @Entity public class Pokemon{} @Table - table name @Table(name = "Poke") public class Pokemon { } @Id - mark the primary key Annotate primary key @Id private int id; @GeneratedValue - the strategy for primary key GenerationType @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private int id; GenerationType.IDENTITY The database is set AUTO_INCREMENT. Similar to SQL id NOT NULL AUTO_INCREMENT GenerationType.SQUENCE GenerationType.TABLE Use the TABLE in database to set the primary key for us, instead of the DBMS system....

Spring RESTful service Laur Spilca Youtube Tutorial series spring docs Spring Restful service is a popular backend application. The architecture usually is made up with 3 layers: Controller, Service, and Repository. Configuration setup @SpringBootApplication - define the app root The start point of program It’s with @ComponentScan - tell spring to create beans in which the classes have been annotated with. Spring RESTful Service architecture Spring RESTful service usually has this architecture....