What are access levels for classes and interfaces?
What are access levels for classes and interfaces? Situation | public | protected | default | private | Accessible to class from same package? | yes | yes | yes | no | Accessible to class from different package? | yes | no, unless it is a subclass | no | no |
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What is the List interface?What is the List interface? - The List interface provides an ordered collection. Elements in the List can be accessed using integer indexes...
What is an Iterator interface?What is an Iterator interface? - An iterator acts over a collection like an Enumeration. However, Iterators differ from enumerations in two ways:...
What is the Map interface?What is the Map interface? - A Map maps keys to values. It cannot contain duplicate keys. The three general-purpose Map implementations are:..