Java (anonymous or not) inner classes: is it good to use them?

Question

In some of my projects and in some books was said to not use inner class (anonymous or not, static or not) - except in some restricted conditions, like

Answer 1

Inner classes are often used to "pass a behavior" as a parameter of a method. This capability is supported in an elegant way by other languages with closures. Using inner classes produces some not elegant code (IMHO) because of a language limitation but it's useful and widely used to handle events and blocks in general with inner classes.

So I would say that inner classes are very useful.