New PDF release: A Programmer's Guide to Java SCJP Certification: A

By Khalid A. Mughal, Rolf W Rasmussen

ISBN-10: 0321556054

ISBN-13: 9780321556059

This ebook may also help you arrange for and cross the sunlight qualified Programmer for the Java Platform SE 6 (CX-310-065) examination. it really is written for any skilled programmer (with or with out prior wisdom of Java) drawn to learning the Java programming language and passing the SCJP 1.6 examination. A Programmer’s consultant to Java™ SCJP Certification, 3rd variation, presents specified assurance of all examination issues and targets, with no trouble runnable code examples, programming routines, vast overview questions, and a brand new mock examination. moreover, as a finished primer to the Java programming language, this e-book is a useful reference device. This re-creation has been completely up to date to target the most recent model of the examination (CX-310-065). particularly, it includes in-depth motives of the language positive factors. Their utilization is illustrated when it comes to code eventualities, as required via the examination. The significant other site (www.ii.uib.no/~khalid/pgjc3e/) encompasses a model of the SCJP 1.6 examination Simulator built by way of the authors. the positioning additionally comprises the total resource code for the entire book’s examples, in addition to strategies to the programming exercises.What you'll find during this book:Extensive insurance of all of the ambitions outlined for the sunlight qualified Programmer for the Java Platform, average version 6 (CX-310-065) ExamAn easy-to-follow constitution with chapters prepared in response to the examination pursuits, as laid out through sunlight MicrosystemsSummaries that truly country and differentiate the examination pursuits and the supplementary goals to be lined in every one chapterA checklist of Sun’s ambitions for the SCJP 1.6 examination and a advisor to taking the examA whole mock examination with new questions (not repeats of evaluate questions)Numerous exam-relevant assessment inquiries to try your figuring out of every significant subject, with annotated answersProgramming routines and ideas on the finish of every chapterCopious code examples illustrating innovations, the place the code has been compiled and carefully validated on a number of platformsProgram output demonstrating anticipated effects from working the examples large use of UML (Unified Modeling Language) for representation reasons An advent to simple terminology and ideas in object-oriented programmingAdvice on the right way to stay away from universal pitfalls in gaining knowledge of the language and taking the examPlatform- and tool-independent coverageInformation in regards to the SCJP 1.6 improve (CX-310-066) examination

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Additional resources for A Programmer's Guide to Java SCJP Certification: A Comprehensive Primer (3rd Edition)

Example text

The constructor of the PrintableCharStack class at (3) calls the constructor of the superclass CharStack in order to initialize the stack properly. java public class CharStack { // Instance variables protected char[] stackArray; // The array that implements the stack. protected int topOfStack; // The top of the stack. 2. println(); } // Constructor calls the constructor of the superclass explicitly. 7 Aggregation When building new classes from existing classes using aggregation, a composite object is built from the constituent objects that are its parts.

The reference value in stackA is assigned to stackB. The reference variables stackA and stackB are aliases after the assignment, as they refer to the same object. What happens to the stack object that was denoted by the reference variable stackB before the assignment? When objects are no longer in use, their memory is, if necessary, reclaimed and reallocated for other objects. This is called automatic garbage collection. Garbage collection in Java is taken care of by the runtime system. 4 Instance Members Each object created will have its own copies of the fields defined in its class.

GetInstanceCount(); // Reference invokes static method Static members in a class can be accessed both by the class name and via object references, but instance members can only be accessed by object references. 1 Terminology for Class Members Instance Members These are instance variables and instance methods of an object. They can only be accessed or invoked through an object reference. , when an object of the class is created. Also called non-static field. Instance Method A method that belongs to an instance of the class.

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A Programmer's Guide to Java SCJP Certification: A Comprehensive Primer (3rd Edition) by Khalid A. Mughal, Rolf W Rasmussen


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