Question

I need to send collection to this method:

public boolean[] save(T... entities) {
    return _saveOrUpdateIsNew(entities);
}

and I tried to pass the collection:

List<Client> clientsToUpdate = new ArrayList<Client>();
save(clientsToUpdate );

but I get a compilation error that the method type is not applicable for List<Client>

EDITED:

After I added the line:

clientsToUpdate.toArray(new Client[0]);

I have this compilation error:

The method save(Client...) in the type BaseDAO<Client,Integer> is not applicable for the arguments (Client[])

Answer 1

The method you mentioned is using varargs, it means it accepts a single Client instance or an array of Client objects. You should convert your List to array like this:

List<Client> clientsToUpdate = new ArrayList<Client>();
Client[] clients = clientsToUpdate.toArray(new Client[0]);
save(clients);

This should work unless you have multiple Client classes in your project.