Thursday, June 20, 2019

Differences between @RequestParam and @PathVariable annotations in Spring MVC?

The Spring MVC framework, one of the most popular frameworks for developing a web application in Java world also provides several useful annotations to extract data from the incoming request and mapping the request to controller e.g. @RequestMapping, @RequestParam, and @PathVariable. Even though both @RequestParam and @ParthVariable is used to extract values from the HTTP request, there is a subtle difference between them, which makes them a useful question from an interview and spring certification point of view. We'll examine the subtle difference between @RequestParam and @PathVaraible in this article. As the name suggests @RequestParam is used to get the request parameters from URL, also known as query parameters, while @PathVariable extracts values from URI.

Wednesday, June 19, 2019

Top 5 TensorFlow and Machine Learning Online Training Courses for Programmers

If you are curious about Artificial intelligence, Data Science, and Machine learning then I am sure you have heard about TensorFlow, Google's machine learning API, which they have used to develop the RankBrain algorithm for Google Search. TensorFlow is one of the most popular machine learning API which allows you to automate several real-world tasks, for example, you can use it for image detection. In fact, a Japanese farmer turned programmer used it to detect the best quality Cucumber, which only his father and mother can do it with his years of experience. That's the power of machine learning, which is now available to everyone because of TensorFlow.

Tuesday, June 18, 2019

Java 8 Certifications - Oracle Java SE 8 Programmer 1 (1Z0-808) - Latest OCAJP Exam (OCP 11 1Z0-815 and 1Z0-816)

Update: The latest version of Java SE certification is now OCAJP 11 (1Z0-815) and OCPJP 11 (1Z0-816) which is based upon Java 11 version. You can take these two exams to become a certified Java 11 developer, but if you already have an Oracle Certified Professional Java Programmer for the Java 6, 7, or 8 version, then you can take the upgrade OCP Java 6, 7, and 8 to Java SE 11 Developer exam (Exam Code 1Z0-817). I don't have much detail so I still keep this post as it is but once I have got more information. I will also update this post. Today one of my readers asked about what is the latest OCPJP or SCJP exams available and is there a Java certification available for Java SE 9 and Java SE 10? This prompted me to browse through Oracle's certification website. During my casual browsing, I noticed that even though it's almost a year since Java SE 9 was released and 6 months since Java SE 10 was released the latest Java certification is still the Java  SE 8 certification. I know, you might be thinking about Java SE 11, which will come soon, but on the certification level, I don't see this happening. Anyway, I said great, as programmers are still digesting changes from Java 8 now have a chance to be certified the on latest Java 8.

Top 5 Java 8 and 9 Courses for Programmers (FREE) - Best of Lot

Hello guys, if you are looking for some free resources e.g. books, tutorials and courses to learn and master new features introduced in Java 8 and Java 9 then you have come to the right place. In past, I have shared some of the best Java 8 tutorials and books and in this article, I am going to share some of the best, free Java 8 and Java 9 courses from Udemy and Pluarlsight with you. These courses are pretty similar to many paid courses you normally buy and many of these are made free by just promotional or educational purpose by their instructor. You can join these courses to learn JDK 8 and JDK 9 features in a couple of days.

Monday, June 17, 2019

How to Crack Spring Core Professional v5.0 Certification - Latest Spring Certification for Java Programmers

Ever since Pivotal, the company behind Spring framework made the mandatory Spring training optional (see here), I have received many queries from experienced Java developers who are interested in doing Spring certifications. This move from Pivotal has suddenly made the Spring certification affordable for many experienced Java and Spring developers who were interested in Spring certification earlier but couldn't progress further due to expensive mandatory training. Since many of them are now preparing for Spring certifications e.g Spring Core 5 or Spring Professional 5 via self-study they are increasingly looking for good resources to prepare for the exam. I have received a lot of questions on preparation, books, mock exams, exam structure, passing marks and useful resources.

Top 5 Android Online Training Courses for Java Developers - Best of Lot

Java has been very lucky that Android uses it as a programming language. This opened a big door of opportunities for Java developers in Android app development. Many people ask me why Java Developer should learn Android? My simple answer is that good knowledge of Android OS improves your chances of getting a job and making a difference in people's lives because Android Apps is the direct way to connect billions of people. Android is without a doubt THE biggest mobile platform in the world, with over 80% market share and over billions of devices running Android. By creating apps for such a big platform, you have a great opportunity to make a difference.