Appendix . Java Keywords
Throughout this book we have discussed words that have special meaning in the Java language. These words are referred to as Java keywords. The keywords are used to declare, modify, and define things, and some of them are operators. Because they have special meaning, keywords cannot be used as identifiers. You can't declare a variable named “final,” for instance.
Here is a list of the Java keywords and a brief description of how they are used in the Java language. A more complete description of the keywords and examples of how to use them can be found throughout this book.
abstract—. A modifier applied to a class or method. An abstract class is one that cannot be instantiated. An abstract method is one that must be overridden ...
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