java classes are,

class Account
{
private long acctId;
private doule balance;
private UserHoldings[] objUserHoldings;
}
class Positions
{
private long positionsId;
private String positionsName;
}

class UserHoldings
{
private Account account;
private Positions position;
private long value;
private Date current;
}

i'm newbie to Hibernate, i don't know how to make UserHolding hibernate mapping file. can anyone help me? In UserHolding class accountId and positions id as Composite key.

Looks like you've just got a basic one-to-many mapping that is navigable in both directions.

Just map one class at a time, and you'll do fine.

Here's a little tutorial on mapping one-to-many associations in Hibernate:

http://jpa.ezhibernate.com/Javacode/lea ... sociations

Also, here's a slightly more complex domain model that is completely mapped, so you can get a good idea of how it looks when multiple classes are mapped interchably within a domain model:

http://jpa.ezhibernate.com/Javacode/lea ... itymapping



http://jpa.ezhibernate.com/Javacode/lea ... itymapping