Why "import javax.persistence.*" can not be resolved?

[mellon]

I am new in hibernate. I try to use Hibernate annotation to implement the mapping of the properties with the database. But in my object class, when I import javax.persistence.* it can not be resolved.

I use Eclipse IDE, I add the hibernate-notations.jar, hibernate-commons-notations.jar, hibernate-entitymanager.jar, hibernate3.jar, antlr-2.7.6.jar, dom4j-1.6.1.jar, jta-1.1.jar to my classpath.

and my hibernate configuration file is hibernate.cfg.xml:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

	<session-factory>
	
		<!-- Database connection settings -->
		<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
		<property name="connection.url">jdbc:mysql://localhost:3306/test</property>
		<property name="connection.username">user</property>
		<property name="connection.password"></property>
		
		<!-- JDBC connection pool (use the built-in) -->
		<property name="connection.pool_size">1</property>
		
		<!-- SQL dialect -->
		<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
		
		<!-- Enable Hibernate's automatic session context management -->
		<property name="current_session_context_class">thread</property>
		
		<!-- Disable the second-level cache -->
		<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
		
		<!-- Echo all executed SQL to stdout -->
		<property name="show_sql">true</property>
		
		<!-- Drop and re-create the database schema on startup -->
		<property name="hbm2ddl.auto">none</property>
	
	<mapping class="springapp.domain.Product"/>

</session-factory>

</hibernate-configuration>

My object class is Product.java:

package springapp.domain;

import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;//(The red part can not be resolved)

@Entity
@Table(name = "product")
public class Product implements Serializable {

	@Id
	@Column(name = "id")
	private int id;
    
	@Column(name = "description")
	private String description;
	
	@Column(name = "price")
    private Double price;
    
    public void setId(int i) {
        id = i;
    }

    public int getId() {
        return id;
    }

    public String getDescription() {
        return description;
    }
    
    public void setDescription(String description) {
        this.description = description;
    }
    
    public Double getPrice() {
        return price;
    }
    
    public void setPrice(Double price) {
        this.price = price;
    }
    
    public String toString() {
        StringBuffer buffer = new StringBuffer();
        buffer.append("Description: " + description + ";");
        buffer.append("Price: " + price);
        return buffer.toString();
    }
}

What do I miss?? How to solve the problem?

[mellon]

Problem solved. It is just because I did not add ejb3-persistence.jar to my classpath.