I hate it when example or teaching code does something like: import foo.bar.*
import foo.baz.*
And then starts just using the symbols defined in foo.bar and foo.baz willynilly. This is *stupid*. The point of example code is to teach me. Doing this in example code does not teach me which symbols are in which package, nor does it teach good form or proper idiom. The only thing it teaches is rage against who ever wrote the examples. Most all of the teaching docs and example code for Java are worst chronic offenders.