INTRODUCTION

Java is a programming language originally developed by James Gosling at Sun Microsystems (which is now a subsidiary of Oracle Corporation) and released in 1995 as a core component of Sun Microsystems' Java platform. The language derives much of its syntax from C and C++ but has a simpler object model and fewer low-level facilities. Java applications are typically compiled to bytecode (class file) that can run on any Java Virtual Machine (JVM) regardless of computer architecture. Java is a general-purpose, concurrent, class-based, object-oriented language that is specifically designed to have as few implementation dependencies as possible. It is intended to let application developers "write once, run anywhere". Java is currently one of the most popular programming languages in use, and is widely used from application software to web applications.

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History

James Gosling, Mike Sheridan, and Patrick Naughton initiated the Java language project in June 1991. Java was originally designed for interactive television, but it was too advanced The language was initially called Oak after an oak tree that stood outside Gosling's office; it went by the name Green later, and was later renamed Java, from a list of random words. Gosling aimed to implement a virtual machine and a language that had a familiar C/C++ style of notation.

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Java Secrets delves into the parts of Java that are not documented by Sun, that are not generally accessible to anyone with a web browser, and that are not already in a hundred other books. Part One explores the internals of the Java virtual machine including byte code, thread models, garbage collection algorithms, class loaders, security managers, and more. It teaches you how to disassemble and decompile .class files so you too can learn things nobody wanted you to know. Part Two delves into the sun classes, a group of undocumented packages that add considerable power to Java programs. Part Three explores the possibilities opened by platform dependent code. It shows you how to call the native API and how to create stand-alone executable programs. Finally, the CD includes an assortment of Java hacking tools including a full version of the payware Java decompiler WingDIS 2.0.3. This is one of the most interesting and exciting projects I've worked on in a long time. The sheer number of "Aha!" experiences I had while researching and writing this book was phenomenal. I hope you'll get the same feeling while reading it. Java Secrets, is now available at amazon.com and in bookstores everywhere. Why don't you check it out and let me know what you think?

Sun Java Certifications

Sun Java Certification Program is a Globally Recognized, Industry Respected certification program in Java technology. It focuses on key job roles in software application development and enterprise architecture.Certification is central to the learning process as it provides validation of skill sets for specific job roles. Sun Java Certification offers a natural progression to boost your career growth.

First, by becoming a Sun Certified Java Associate (SCJA) You acquire a base set of knowledge that enables entry into a career in application development or software project management using Java technology.
Second, as a developer You are trained on a foundational set of skills, which can then be validated by becoming a Sun Certified Java Programmer (SCJP) and Sun Certified Java Developer (SCJD).
Afterwards, you can pursue advanced or specialty training and certifications (SCWCD, SCBCD, SCMAD, SCDJWS) that help enable career growth into more specific job roles making you extremely valuable to an organization.
You set yourself a class apart by achieving Sun Certified Enterprise Architect (SCEA), responsible for architecting and designing Java Platform, Enterprise Edition technology-compliant applications that are scalable, flexible, and highly secure.

Since these certifications focus on the technology; the knowledge and skills learned while preparing for Sun Java Certification Exams are transportable from one company to another.
Sun offers the following Java technology professional certifications:

Certifications
Sun Certified Java Associate (SCJA)
Sun Certified Java Programmer (SCJP)
Sun Certified Java Developer (SCJD)
Sun Certified Web Component Developer (SCWCD)
Sun Certified Business Component Developer (SCBCD)
Sun Certified Developer For Java Web Services (SCDJWS)
Sun Certified Mobile Application Developer (SCMAD)
Sun Certified Enterprise Architect (SCEA)

The goal of Sun Java Certification is to test on a particular job role. Thus, to prepare for a Sun Java Certification Exam we recommend Whizlabs Mock Exams and a working knowledge of the Java technology, prior to taking the exam. Whizlabs Mock Exams are not just an important component in certification preparation, rather by practicing Whizlabs Sun Java Certification Mock Exams You are guaranteed to Get Certified in 1st Attempt or 100% Money Back! Unconditionally!