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Just Java™ 2, Fifth Edition by Peter van der Linden

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Chapter 4. Identifiers, Keywords, and Types

Identifiers, Keywords, and Types

The great majority of operating systems in use today employ the ASCII codeset to represent characters. ASCII, the American Standard Code for Information Interchange, started out as a 7-bit code that represented uppercase and lowercase letters, the digits 0–9, and a dozen or so control characters like NUL and EOT. As computing technology became pervasive in Western Europe, users demanded the ability to represent all characters in their national alphabets. ...

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