Is a Year in industry worth It?Watch
Summer jobs are good too. If you graduate having spent 12+ months in a successful internship, and had one or two successful summer jobs each lasting a few months then that will look great on your CV.
Another advantage is getting yourself known - you may find that the company you choose for one of these placements invites you back for an interview, or that you might be able to network with some of the professionals you meet there in case they know of other opportunities. Being able to approach a company you'd worked with as a student is a strong position to apply from (assuming you want to work for them again and assuming they have a vacancy), but if you meet people while working there who have other contacts, you could also find those to be helpful as well. Anything which helps you avoid the IT recruitment agencies after you graduate is a benefit.