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When should inner classes be used in Java?Inner classes were introduced in version 1.1 of Java. Ever since they were introduced they inspired a lot of different opinions among people – but we won’

First off, we want to clarify that when we discuss inner classes in this article, we are not referring to Anonymous inner classes or Argument defined anonymous inner classes. That’s important to cla

What is the difference between an inner and nested class in Java? What about the difference between an inner class and a static inner class?This tutorial is a bit complex, but we’ll try to keep th

Reference from: http://www.programmerinterview.com/index.php/database-sql/inner-vs-outer-joins/