In the previous posts, we had only a single entity called the student. Let's create another entity named the library card. The library card entity will have its own table in the database with its own primary id column. @Entity @Table(name = "library_...
In this post, we'll look at how we can persist non-primitive data types in JPA. The primitive data types like int, char, byte, String, boolean, or their respective wrapper classes are mapped automatically by default into the correct database types by...
In the previous posts, we set up the Java project and connected it to a database with JPA, and hibernate. Let's look back on the persistence.xml file we created and understand it in more detail. The location of this file is src -> META-INF -> persis...
In the previous post, we set up a database and JPA configurations, Let's create a Java class Student, and see how to make it work with JPA. Let us create a Student class with just two fields id and name. 💡 Note: Classes only contain member variable...
Typically JPA is integrated with Spring/Spring Boot and Java EE/Jakarta EE applications. Both these applications provide an abstraction over the JPA which hides a lot of stuff that we need to do manually in a barebones Java application. This abstract...
Why learn JPA? If you are developing Java applications that connect a database( which they usually do), to create a connection between the database and the application we use JPA. JPA is used only with relation databases not with non-relational datab...
