You could try it!
There are no guarantees, because it will depend on the individual hamsters too, but if you want to try, give it a shot. How many males are you planning on housing together?
First, I recommend reading the Housing Multiple Hamsters
thread, to make sure you have all the supplies and space to try and get the best results you can.
As for introducing them, I've never heard of a specific method used for hamsters. If there is a better way, someone please let me know. But you can try introducing them very slowly; at first, just swap their old bedding so they can get used to each others' scents.
Then, switch their cages for a few minutes/hours per day at a time (don't let them meet yet, but this is just so they can get more familiar with the others' smells).
If all goes well and none show signs of being stressed, I would introduce them in a neutral place (free of the scents of either hamster, such as a bathtub or playpen or plastic bin) with houses/huts placed inside so they don't feel vulnerable out in the open. Make sure to watch them. If you're introducing a group of hamsters to a single hamster, at the beginning introduce them one at a time so he doesn't feel overwhelmed.
Continue doing this for a few days, and after they seem well acquainted, you can try housing them in a neutral cage (so, a cage neither have been in before), monitoring closely to see if they get along.
Good luck, and if you do decide to house them together, post results!
Edited by Plushie, 15 March 2012 - 02:13 PM.