Category
Sort By
Java/JVM, Software development
We all know Java comments are not visible to compiler and are not executable. But here we will see how a comment can be executed. To execute any comment we need to append a unicode as prefix to that comment and thats it. Now when you will run the code then this comment line will be executed. [java] public class CommentTest { public...
Java/JVM, Software development
Spring is an open source framework for Java platform that provides comprehensive infrastructure support for developing robust Java applications. Spring Framework is essentially a skeleton that offers a solid foundation upon which an application can be built.This skeleton structure guides and helps developers throughout the application...
Java/JVM, Software development
Many of us know the various operators available in Java. But do we really use them all efficiently. Here I am illustrating one simple example which can show the high performance gain with bitwise operatator than the standard solution. Lets calculate the mathematical expression xn i.e. x's power n. To solve this problem anyone can...
This tutorial is about how to create “swipe to dismiss” RecyclerView item like Gmail app. For this, we don't need any 3rd party Library. For this purpose, you just need to add one class which is part of Android Support Library. The name is “ItemTouchHelper”. By now you know that this blog is all about how to use ItemTouchHelper...
Java/JVM, Software development
Writing a code to integrate MQTT functionality in my Spring application development made me think, am I not doing this over and over again. Having been involved in different IoT applications and numerous other domains, MQTT became an essential part of almost all the applications that I prepared. This is just one example of such a case,...
Java/JVM, Software development
SiteMesh is a very simple, lightweight & flexible Templating Solution framework for Java Web applications. SiteMesh can be used in lot more ways if we combine it with Spring boot framework. Configuring the SiteMesh with Spring Boot is little bit tricky but not complex, as we need to create a custom filter and then inject it into...
To run springboot appllication there is a task "bootRun" which compile and run the application for one deployment lifecyle. This is good enough for the production, where auto compilation is not required. In the dev environment auto compilation is used to avoid recompilation. Also it is very much needed to speed up the development time...
When setting up SSL certificate for a website, we mainly use two types of SSL certificate one is x509 mostly used with applications support OpenSSL library and other is Keystore which is used with Java 1.6+ applications. Apache/Nginx uses x509 pem/crt files which is is very different than a Jetty/Tomcat (Java 1.6+) system that uses...
The latest entrant in the world of technological development is the microservice architecture, also abbreviated as MSA. It would not be completely illogical to think of the MSA as a refined version of a Service Oriented Architecture (SOA) , which has been the go to approach of most enterprises as the needs and demands of users for better...
Problem not covered by Java ExecutorService Java's ThreadPoolExecutor is a great tool. After configuring a thread pool we can keep on submitting Callables and get Futures. These futures can be used to get the values that the callable is supposed to return. In case we want to limit the execution time of this callable we have the...
Recently while working on AEM 6.1, I had to move from Java 6 to Java 8. Simply changing the Java version in POM led to some issues with OSGi services. Specifically, those services that were using @Reference annotation were not getting active and remained in "satistied" state. Here are all the steps I followed firstly to change Java...
Hi All, In my previous blog . I have explained how to send the push notification to Android Device. Now, it's time to see how we can send push notification to iOS devices. For sending Push Notification in iOS I have used JavaPNS_2.2.jar . So before, directly jumping on example we should know that what are prerequisites of...
