| Inner Classes (2008) | |||||||||
Abstract | |||||||||
| In Java, besides having fields and methods, a class can also have other classes as members. Just like fields and methods, a class member of can be static or non-static. A non-static class member is called an inner class. Inner class is a programming construct based on the powerful concept of closure prevalent in the functional programming paradigm. It allows on-the-fly creation of objects, which can communicate transparently with the enclosing object inside of which they come into existence. We illustrate the rationale and use of inner classes via a progression from top level helper classes to named static nested classes, to non-static named classes, and to anonymous inner classes with dynamic on-the-fly instantiation. | |||||||||
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