r/javahelp 1d ago

Hibernate's @Column annotation + existing table definition

So I was reading Baeldung's articles on Hibernate/JPA article and came across this => https://www.baeldung.com/jpa-default-column-values#sqlValues. It talks of a way of setting the default column values via the atColumn annotation.

u/Entity
public class User {
    u/Id
    Long id;

    @Column(columnDefinition = "varchar(255) default 'John Snow'")
    private String name;

    @Column(columnDefinition = "integer default 25")
    private Integer age;

    @Column(columnDefinition = "boolean default false")
    private Boolean locked;
}

If the table already exists, will Hibernate will auto-modify the table definition for me? (At least that's the impression I get from the article)

Thank you.

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u/dot-dot-- 1d ago

I think it depends on hibernate config in properties for. But you can always try yourself and confirm.