I was a Java developer for more than 4 years at the beginning of my career. I was more of application developer than language expert so I did not know about nooks and crannies of the language. But that is exactly what was being asked in interviews and was never able to crack those interviews.

I liked Go and used to work on it in my personal time. Go's way of doing things is usually one way so there are not many things you have to remember about language. I applied for a job of Go and I landed that one. Of course, at that time very few Go developers were there in market so that could be a good reason for me landing that job as well.