Many development teams are using more than one IDE because it’s a very personal matter, and people always seek what best suits their individual needs. And then there’s collaboration, and it sometimes is harder when different sorts of IDEs are involved. One of the most frequently encountered problems is code style, that has to be consistent in the entire project.
You may have heard about Eclipse Code Formatter, a quite popular IntelliJ IDEA plugin that lets you, what else, — use Eclipse’s code formatter with IntelliJ IDEA. In most cases the plugin is fine, but because it’s calling Eclipse AP