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Recommended: Sing it, brah! 5 fabulous songs for developers
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Floating-point arithmetic
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To drive the simulation, just press the "Step" button. Each press of the "Step" button will cause the JVM to execute one bytecode instruction. To start the simulation over, press the "Reset" button. The text area at the bottom of the applet describes the next instruction to be executed. Happy clicking.
Click here for the source code of Circle of Squares.
About the author
Bill Venners has been writing software professionally for 12 years.Based in Silicon Valley, he provides software consulting and training services under the name Artima Software Company. Over the years he has developed software for the consumer electronics, education, semiconductor, and life insurance industries. He has programmed in many languages on many platforms: assembly language on various microprocessors, C on Unix, C++ on Windows, Java on the Web. He is author of the book: Inside the Java Virtual Machine, published by McGraw-Hill.- Feedback
More from JavaWorld
Resources
- "The Java Virtual Machine Specification" represents the official word from Sun.
http://java.sun.com:80/doc/language_vm_specification.html - When it comes out, the book The Java Virtual Machine Specification, by Tim Lindholm and Frank Yellin (ISBN 0-201-63452-X), will be the definitive JVM reference. This book is part of The Java Series from Addison-Wesley
http://www.aw.com/cp/lindholm-yellin.html
http://www.aw.com/cp/javaseries.html - The Java Language Specification discusses floating-point support in Java. This spec has just been published as a book as part
of The Java Series from Addison-Wesley
http://www.javasoft.com/doc/language_specification/
http://www.aw.com/cp/javaseries.html - Peter J. L. Wallis, ed. [1990] Improving Floating-Point Programming, John Wiley & Sons Ltd., ISBN 0 471 924377
- Previous Under The Hood articles:
- The lean, mean virtual machine -- Gives an introduction to the Java virtual machine. Look here to see how the garbage collected heap fits in with the other parts of the JVM.
- The Java class file lifestyle -- Gives an overview of the Java class file, the file format into which all Java programs are compiled.
- Java's garbage-collected heap -- Gives an overview of garbage collection in general and the garbage-collected heap of the Java virtual machine in particular.
- Bytecode basics -- Introduces the bytecodes of the JVM, and discusses primitive types, conversion operations, and stack operations.
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