Miguel schrieb:
[snip]
> - class RidiculousFileFormatTokenizer {
> + static class RidiculousFileFormatTokenizer {
[snap]
>
> You have turned the RidiculousFileFormatTokenizer class into a 'static
> inner class' ...
>
> Q: What is the motivation for turning this into a 'static inner class'?
>
> Q: In this case, does it offer any advantages?
>
An inner class holds a reference to the object of the enclosing class.
A nested class doesn't hold a reference to the enclosure.
sample:
class Enclosing{
int a;
class Inner{
int b = a; // ok, it's an inner class
}
static class Nested{
int c = a; // this will produce a compiler error
}
}
As a consequence a nested class requires less memory and speeds up the
garbage collection due to fewer cross references between various objects.
further reading:
http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#262890
Thomas
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