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POusing hibernate to generate one to many relation through annotation
 

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    <p>I am just a beginner in learning Spring MVC and Hibernate technologies. I am trying to use hibernate to access my database and I am using annotation method to configuring my beans to database. I am trying to make a one to many relation which is throwing me error. </p> <p>Basically I am it is a "one use can post multiple quiz" relation</p> <p>the error while configuring hibernate is :<br/> <strong>org.hibernate.AnnotationException: Use of @OneToMany or @ManyToMany targeting an unmapped class: bean.User.quizPosted[bean.Quiz] Use of @OneToMany or @ManyToMany targeting an unmapped class: bean.User.quizPosted[bean.Quiz]</strong></p> <p>my code for the two beans are : </p> <p>User.java</p> <pre><code> package bean; import java.util.HashSet; import java.util.Set; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; import javax.persistence.Table; import javax.persistence.UniqueConstraint; @Entity @Table(name="User", uniqueConstraints ={@UniqueConstraint(columnNames="userName"})}) public class User { @Id @GeneratedValue(strategy = GenerationType.AUTO) private Integer id; @ManyToOne(targetEntity=Person.class) @JoinColumn(name="PersonId") private Person person; @Column(name="userName") private String userName; @Column(name="password") private String password; @Column(name="role") private String role; @OneToMany(mappedBy = "postedBy") private Set&lt;Quiz&gt; quizPosted = new HashSet&lt;Quiz&gt;(); @OneToMany(mappedBy = "userId") private Set&lt;User_Quiz&gt; user_Quizs = new HashSet&lt;User_Quiz&gt;(); } </code></pre> <p>and quiz.java</p> <pre><code> package bean; import java.sql.Date; import java.util.HashSet; import java.util.Set; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; import javax.persistence.Table; import javax.persistence.UniqueConstraint; @Entity @Table(name = "Quiz") public class Quiz { @Id @GeneratedValue(strategy = GenerationType.AUTO) private Integer quizId; @Column(name = "duration") private Integer duration; @Column(name = "date") private Date date; @ManyToOne(targetEntity = User.class) @JoinColumn(name = "postedBy") private User postedBy; @OneToMany(mappedBy="quizId") private Set&lt;User_Quiz&gt; user_Quizs = new HashSet&lt;User_Quiz&gt;(); } </code></pre>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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