Java Language Reference
by Mark Grand
Publisher: O'Reilly 1997
Number of pages: 492
The book goes into great detail about every aspect of the Java programming language, from the definition of data types to the syntax of expressions and control structures. The goal is to help you understand all of the subtle nuances of Java, so you can ensure that your programs run exactly as expected.
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by James Sutherland, Doug Clarke - Wikibooks
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