Java for Practitioners: An Introduction and Reference to by John Hunt BSc, PhD, MBCS, CEng (auth.)

By John Hunt BSc, PhD, MBCS, CEng (auth.)

Java for Practitioners doesn simply offer an creation to Java, it additionally tells you all approximately item orientation. one of many greatest issues of a few of the Java books presently out there is they basically train the language and forget about the item orientation points (or at top simply dedicate one bankruptcy to it). not just does John Hunt hide either Java and item orientation completely yet he additionally realises that practitioners examine top through oing'and he writes this booklet to mirror that. Chapters are dippable-into and concepts and ideas are brought by way of routines and sensible examples. The e-book does after all hide the recent liberate - Java 2/JDK 1.2 - and it is usually the Java Self-Tester which we could readers ascertain whether or not they are able to take Sun's Java Certification examination. there's additionally an important reference part which gives special recommendations to genuine international Java difficulties, and new Java beneficial properties. not anyone meaning to flow over to Java might be with no this book.

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1991). Object-oriented modeling and design. Prentice Hall, Englewood Cliffs, NJ. , Wilkerson, B. and Wiener, L. (1990). Designing Object Oriented Software. Prentice Hall, Englewood Cliffs, NJ. Yourdon, E. (1994). Object-Oriented Systems Design. Prentice Hall, Englewood Cliffs, NJ. 1 Introduction I first encountered the Java language in April 1995. I was attending a conference in Amsterdam and, over breakfast with a number of American academics, was discussing suitable first programming languages.

Hunt, Java for Practitioners © Springer-Verlag London Limited 1999 35 Java for Practitioners 36 The operation of the wash-wipe system is controlled by a switch which can be in one of five positions: off, intermittent, slow, fast and wash. Each of these settings places the system into a different state: Switch setting System state Off The system is inactive. Intermittent The blades wipe the windscreen every few seconds. Slow The wiper blades wipe the windscreen continuously. Fast The wiper blades wipe the windscreen continuously and quickly.

If the procedure is not defined there, look in the class's parent. Keep doing this until you find a procedure which implements the operation requested. This is the version which is used. In languages such as Java the choice of which version of the procedure to execute is not determined at compile time, because the compiler would have to be able to determine the type of object and then find the appropriate version of the procedure. Instead, the procedure is chosen at run time. The technical term for this process of identifying the procedure at run time rather than compile time is called "late binding".

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