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I find a very useful to read this question: Java inner class and static nested class, but can't find there any example from Java. Could you provide me with real examples of using those classes from JDK, JRE?

koniga-ganica
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  • One example could be the ArrayList implementation - java.util.ArrayList. It contains several inner classes implementing the java.util.Iterator interface. There are factory methods that return new instances of these inner classes. – mishless Mar 21 '18 at 11:43

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Nested classes (static inner) do not have a reference to outer context. Map#Entry is an example of such nested class -- it contains only key, value pair properties and by definition has no access to outer Map implementation.

Alex Evseenko
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  • Thanks for your answer. I also found a few examples in java.lang package: Character, ProcessBuilder, Thread; Other ones java.net.Proxy, java.util.ResourceBundle, java.util.Formatter, ... – koniga-ganica Mar 25 '18 at 15:06