//$Id: Friend.java,v 1.4 2004/12/08 20:05:14 epbernard Exp $package org.hibernate.test.metadata.manytomany;import java.util.Collection;import java.util.Set;import java.io.Serializable;import javax.ejb.Entity;import javax.ejb.Id;import javax.ejb.GeneratorType;import javax.ejb.ManyToMany;import javax.ejb.AssociationTable;import javax.ejb.CascadeType;import javax.ejb.Table;import javax.ejb.JoinColumn;/** * Friend has other friends in a many to many way * @author Emmanuel Bernard */@Entity()public class Friend implements Serializable {	private Integer id;	private String name;	private Set<Friend> friends;		@Id(generate = GeneratorType.AUTO)	public Integer getId() {		return id;	}	public String getName() {		return name;	}	public void setId(Integer integer) {		id = integer;	}	public void setName(String string) {		name = string;	}		@ManyToMany(		cascade={CascadeType.CREATE, CascadeType.MERGE}	)	@AssociationTable(		table=@Table(name="FRIEND2FRIEND"),		joinColumns={@JoinColumn(name="FROM_FR")},		inverseJoinColumns={@JoinColumn(name="TO_FR")}	)	public Set<Friend> getFriends() {		return friends;	}		public void setFriends(Set<Friend> friend) {		this.friends = friend;	}}