Two public classes in one file java

Question

Ok, this might be kiddies question in java. We can\'t define two public classes in one file. But, in one of the examples from the book SCJP study guide, this example was men

Answer 1

you can make 2 public classes in one file , inside a class that contains them .

it's also recommended to add "static" for them , if you do not need any reference to the container class .