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Java has a concept of anonymous classes which can look something like this:
1: @Test
2: public void watch(Observable o) {
3: @NonNull
4: Observer obs = new Observer() {
5: public void update(Observable o, Object arg) {
6: history.addElement(arg);
7: }
8: };
9: o.addObserver(obs);
10: }
The brace following the new operator opens the anonymous class.
Lines 5 and 8 are assigned the inexpr-class syntax, besides the
inclass symbol used in normal classes. Thus, the class will be
indented just like a normal class, with the added indentation given to
inexpr-class. An inexpr-class syntactic element doesn’t
have an anchor position.
Line 2 is assigned the annotation-top-cont syntax, due to it being a
continuation of a topmost introduction with an annotation symbol preceding
the current line. Similarly, line 4 is assigned the annotation-var-cont
syntax due to it being a continuation of a variable declaration where preceding
the declaration is an annotation.