Hello . . i am newbie in hibernate

I have some question about save foreign key from 2 table that have related
first table :
#student table structure
id varchar(2)
name varchar(45)
course_id varchar(2)

#course table structure
course_id varchar(2)
course_name varchar(50)

And i generate entity class from two table above automatically using netbeans, So the type of courseId at the student class would be "course" type...and i create JFrame an some textfield to input the date to table. but i have problem when i would save courseId that the type is different from student table data type at course_id column.at the table the data type is varchar but at the entity class the type is Course.
Any body can help me
I'm so sorry for my bad english,cause i'm indonesian. :-)

Hi, just a suggestion to use many-to-many relationship, because student maybe can have many courses.

To solve your issue, you need to retrieve the Course by id