How To Implement Many to Many Relationship in java using classes

[Rohit Kumar Singh]

I am Stuck With a Problem in my Project.

I am developing a Fictitious Payment gateway.

I have to implement a payment for Different types of merchant (N types).

Each merchant can have N no of Transactions, with a particular bank or with N no. of different banks..

So, i am not getting the basic idea how to do it using classes...

I have to develop a basic API,no use of Database and all...

Please help me out with that...

Your Suggestion and Explanation will be Helpful To me..

Thanks and Regard's

[Tony Docherty]

Welcome to the Ranch.

First of all decide on what classes you think you need and draw a UML class diagram showing the relationships between those classes.

[Rohit Kumar Singh]

Thank's

I have a merchant type class , a merchant class, a bank class and some more classes for there calculations.

but what i am not getting is how to relate transactions between bank class and merchant class.

i.e i am not getting how to proceed with my Transaction's class.

Rest every thing in my code is fine..