Abstract and Nested Classes - 23m Practice 5-1: Applying the Abstract Keyword - 14m Practice 5-2: Implementing Inner Class as a Helper Class - 7m Practice 5-3: Using Java Enumerations - 11m Skill ...

The following class demonstrates which Map implementations and which nested Map classes are Serializable and which are not for several popular standard Map implementations.

If you’ve read my Java 101 tutorial introducing static classes and inner classes, you should be familiar with the basics of working with nested classes in Java code. In this Java tip, you’ll ...

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