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Applying aspect oriented programming

spring-interview-questions-answers

1.Introduction The main target of the aspect oriented programming is the separation of cross-cutting concerns. When we talk about cross-cutting concerns we are referring to generic functionality that is used in several places in our system or application. These concepts are, among others:         Logging Transaction management Error handling Monitoring Security The way to achieve this separation ...

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Playing with Java 8 Lambdas in the JDT

I’ve been playing with the language a bit while tinkering with the Java 8 support under development by the Eclipse Java development tools (JDT) project. I’ll admit that I’m a little underwhelmed by lambdas in Java 8. This, of course, comes from an Old Dude Who Knows Smalltalk (and LISP/Scheme). Like any good Smalltalk curmudgeon, when I set about learning ...

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Spring Integration Standalone application with Spring Boot

spring-interview-questions-answers

I had earlier blogged about a way to write a standalone Spring Integration application. Spring Boot makes creating this standalone application much simpler. The simple flow was to poll the USGS service providing information about the earthquake activity around the world and to log this information. The flow described using Spring Integration is the following:           ...

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AES-256 Encryption with Java and JCEKS

Overview Security has become a great topic of discussion in the last few years due to the recent releasing of documents from Edward Snowden and the explosion of hacking against online commerce stores like JC Penny, Sony and Target. While this post will not give you all of the tools to help prevent the use of illegally sourced data, this ...

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Java 8 news

The first release candidates of Java 8, b128 and Java 8 RC2 showed up on February, fixing a serious flaw in the new Comparator API, where its new thenComparing() method had an unnecessary type restriction. The thenComparing() method of java.util.Comparator does not require that type U extend java.lang.Comparable, since keyComparator is used to compare extracted key objects. Java 8 RC2 ...

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Using Reflection for Testing

I am working on a presentation about the ‘Single Responsibility Principle’, based on my previous post. It take most of my time. In the meantime, I want to share a sample code of how I use to test inner fields in my classes. I am doing it for a special case of testing, which is more of an integration test. ...

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OutOfMemoryError: solution antipatterns

Throughout those years we have kept a close eye on the problems packaged in different flavours of OutOfMemoryError message. Daily digests on new questions on specific keywords via specialised services such as the Google Alerts have given us a good overview about the situations where applications fail with the java.lang.OutOfMemoryError in logs. The people facing the problem tend to fall ...

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ADF Faces. Immediate custom client events

java-interview-questions-answers

In this post I am going to focus on ADF Faces Javascript API method to fire a custom event from the client side. For example:                      function cliListener(actionEvent) {      AdfCustomEvent.queue(actionEvent.getSource(), "servListener",                         null, true);     } We can use af:clientListener tag in order to attach the cliListener function to a ...

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Two Ways to Get the Most Out of Daily Stand-up Meetings

A daily stand-up meeting is an essential part of agile software development. It is a meeting which takes place at the same place and time every working day. The agenda of this meeting is simple. Each team member must answer to three question: What did I do yesterday? What will I do today? What problems (impediments) prevents me from doing ...

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