Spring - H2, JPA starter ->

1. Add H2, JPA dependencies

In case you are using gradle you can add the following to your build.gradle

implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
runtimeOnly 'com.h2database:h2'

2. H2 jpa configration

set the jpa and H2 configs in

application.properties

spring.h2.console.enabled=true
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.jpa.hibernate.ddl-auto=update
spring.datasource.driverClassName=org.h2.Driver

spring.datasource.url=jdbc:h2:file:./data/dcbappA
spring.datasource.username=user
spring.datasource.password=

3. Creating Entity

This entity will be added as a new table in the database.

model > Customer.java

@Entity
@AllArgsConstructor
@NoArgsConstructor
@Data
@Builder
public class Customer {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    private String name;
    private String Address;
    private Long phone;

}

4. Creating repository

Repository extendss the JPA to provide prebuild queries.

repository > CustomerRepository

@Repository
public interface CustomerRepository  extends JpaRepository<Customer,Long> {

}