struts和hibernate简单问题

this.firstname = firstname;

}

public java.lang.String getLastname(){

return this.lastname;

}

public void setLastname(java.lang.String lastname){

this.lastname = lastname;

}

public java.lang.Integer getAge(){

return this.age;

}

public void setAge(java.lang.Integer age){

this.age = age;

}

public java.util.Set getBookSet(){

return this.bookSet;

}

public void setBookSet(java.util.Set bookSet){

this.bookSet = bookSet;

}

public boolean equals(Object rhs){

if (rhs == null)

return false;

if (! (rhs instanceof Customer))

return false;

Customer that = (Customer) rhs;

if (this.getId() == null || that.getId() == null)

return false;

return (this.getId().equals(that.getId()));