It is possible to define a class within a class termed as nested class. There are _____ types of nested classes.
2
In Java, a class declared inside another class is called a nested class. Nested classes are grouped by whether they are declared with the static modifier.
The two types are: (i) static nested classes, which are associated with the outer class itself and cannot directly access instance members of the outer object; and (ii) non-static nested classes, called inner classes, which are tied to an instance of the outer class and can access all of its members.
Local classes (declared inside a method body) and anonymous classes (declared and instantiated in one expression) are special kinds of inner classes, so they belong to the non-static category rather than forming further types.
Counts of 3, 4 or 5 come from listing these sub-kinds of inner classes as if they were separate top-level categories.
2 option is correct.
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