Java Development Topics:
JVM performance issues
Within a Java-based system, a lot of responsibility is put on the Java Virtual Machine (JVM) to make sure the application runs smoothly and reliably. JVM performance issues are therefore of paramount concern to any Java developer. Application Performance Monitoring systems, interception, triage, and collection each play an important role. In this section on Java Virtual Machine performance issues find news, research, and tutorials on how to better understand JVM performance issues, and get tips and advice for diagnosing and fixing JVM performance issues more effectively. The JVM must be carefully monitored and attended to for optimum performance.
News:
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OCAJP Java 7 Exam Expected in March 2012? OCPJP to Follow?
10 Jan 2012
News - Highly anticipated, the new Oracle certification for Java, OCAJP, went out of beta on December 17th, 2011. So when will the new exam be released? And when will the OCPJP exam be released?
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OCPJP & OCAJP: Java 7 training requirement for the Oracle Certified Professional Programmer dropped
21 Dec 2011
News - In order to obtain the certified architect position from Oracle, attending and passing a training course is now required. But what about the Java Professional and Java Associate designations, OCPJP and OCAJP for Java 7?
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OCAJP and OCPJP Changes for Java 7: New Objectives, a Format Change and a Price Hike
16 Dec 2011
News - The OCP (Oracle Certified Professional) Java 7 certification (OCAJP and OCPJP), which replaced the SCJP certification, will now require you to pass two exams, each of which will cost $300 to take, pushing the cost of the designation to $600.
Reference & Learning:
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Has Computer Programming Really Changed Much Since Lovelace's Time?
26 Jan 2012
Feature - Everyone always talks about these new computer programming languages, and how great one is over the other. But really, has computer programming really changed that much over time?
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OCPJP & OCAJP Mock Exam Question for the Java 7 Exam
23 Jan 2012
Tutorial - Looking to get Java 7 certified from Oracle, and obtain your OCPJP or OCAJP, Professional or Associate designations? Well, you need to know the tricks they throw at you with regards to operator precedence. This question hits your knowledge of the OCAJP 7...
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New Java 7 Features: How to Use a More Precise Rethrow in Exceptions from Project Coin
12 Jan 2012
Tutorial - Afficionados of other languages such as Scala or Clojure are always slagging the fact that Java is too verbose and cumbersome. So, it's not too surprising to find out that Java 7 introduced a number of new facilities that can help to trim down the code...
Expert Technical Advice:
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Java 7 and the intricacies of safe and unsafe casting
26 Jan 2012
Tip - One of the problems with casting is that it does have the potential to cause a loss of precision, especially if the number that gets cast does indeed fall outside of the range of the target type. Here we will explain why this happens.
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OCPJP Java 7 Mock Certification Exam: A Tricky Question about ARM and Try-with-Resources
30 Dec 2011
Tip - The Oracle Certified Professional Java Programmer (OCPJP) exam requires you to know the ins and outs of the new language features introduced in Java 7. This tricky question tests you on your knowledge of try-with-resources and AutoCloseable objects.
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Embedded devices are virtually everywhere
15 Jun 2011
Tip - The advantages virtualization has brought to everything from data grids to smartphones is now spilling into embedded systems.