//MusicCDHome.java

package com.whaic.music;

import java.rmi.RemoteException;
import javax.ejb.*;


public interface MusicCDHome extends EJBHome {
public MusicCD create(String upc)
throws CreateException, RemoteException;
public MusicCD findByPrimaryKey(String pk)
throws FinderException, RemoteException;
}

//MusicCDBean.java

package com.whaic.music;

import java.rmi.RemoteException;
import javax.ejb.*;


public interface MusicCDHome extends EJBHome {
public MusicCD create(String upc)
throws CreateException, RemoteException;
public MusicCD findByPrimaryKey(String pk)
throws FinderException, RemoteException;
}


//MusicCD.java
package com.whaic.music;

import java.rmi.RemoteException;
import javax.ejb.*;


public interface MusicCD extends EJBObject {
public String getTitle() throws RemoteException;
public void setTitle(String title) throws RemoteException;

public String getArtist() throws RemoteException;
public void setArtist(String artist) throws RemoteException;

public String getType() throws RemoteException;
public void setType(String type) throws RemoteException;

public float getPrice() throws RemoteException;
public void setPrice(float price) throws RemoteException;
}

1¡¢what should I want?

2¡¢what's difference between CMP1.0 and CMP2.0?

3¡¢where can I find some examples on program on this net?