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Alex Rivera
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I am currently learning Hibernate and the Java Persistence API. I have an @Entity class, and need to apply annotations to the various fields. I have included in the code below all three places where they could go. Should I apply them to the field itself, the getter or the setter? And what is the semantic difference, if any, between these three options. import javax.persistence.Entity; import javax.persistence.Table; import javax.persistence.Id; @Entity @Table(name = "song") public class Song { // Annotations should only be applied to one of the below @Id @Column(name="id", unique=true, nullable=false) private int id; @Id @Column(name="id", unique=true, nullable=false) public int getId() { return id; } @Id @Column(name="id", unique=true, nullable=false) public void setId(int id) { this.id = id; } }
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