When we wanty a class to provide a set of operations on data of the same type in Java we use Java generics. In other languages the same concept is called “templates”, but the idea is pretty much the same, restrict at compile time the data types that an object can accepr to avoid inapropriate…
Abstract data types in Kotlin and Java
An abstract data type or ADT is an entity that stores the information we require to store it as a information unit about a subject as if it was a type incorporated into the system , here we demonstrate how to do this in Kotlin and Java. Suppose we want to list the information of…
Format a long as Date in JSP
On this occasion will teach you how to format long as date in JSP. Recently happened to me that sent a field of type date data model using Spring and the render in view is displayed as long since it was used, so I had to investigate a little and not found much information. <jsp:useBean…
Combining Java and JSP codes using Spring
In many systems usually we use many constants globally and many times want to convert them to a representation in string. Then I will show you how to do that with spring. We can use the tag eval of the taglib from Spring to call code of any kind and to use language THE Expression…
Free course Oracle: introduction to Lambdas and Java Streams online
Oracle Inc. provides a course free for teach to those developers to use Lambdas and Streams of Java, which is in some way an act quite surprise. This course is a move to attract more developers to the new features 8 Java that will be the bread of every day with the upcoming release of…
Performing a Port Check with Java
We are going to learn how to do a port check programatically with the help of Java.Linux machines have more ports than Windows, for Mac I haven’t really tried the valid port range. Port Check Algorithm To perform port checking we will try to connect to all of the ports one by one. We have…
Cómo configurar JBoss EAP en IDEA
Este es un artículo exclusivo para el Instituto Nacional Electoral y muestra de forma suscinta como configurar JBoss EAP en IDEA. Configuración Primero agregamos el servidor desde El menú de configuración que normalmente podemos abrir mediante el comando Control + Alt + S Luego agregamos el ambiente desde la parte superior derecha del editor. Normalmente…
Bad Joke in Java comment
Hope you liked this little trick, whenever you jant to hide some code from noobs or play some tricks to some of your colleagues.
Enable Spring Webflow Visual Editor in Eclipse
In this post I’ll show you how to convert your Eclipse into a Spring WebFlow Visual Editor. I’ve used Spring Tools Suite version 3.7.3.RELEASE. Downloading Plugins First we should download a plugin, in my case I have the last version of Spring Tool Suite, and then search the plugin in the SpringSource repository. To search…
Learning Java hacking with XSS at the expense of primefaces
Hello everyone! Sometimes even professionals forget how to do a simple configuration, and we will take advantage od that to learn some Java Hacking with a technique named XSS over a real JSF enviroment. Hacking primefaces Primefaces.org is the site for the JSF library primefaces that is not only very popular but very attractive visually.…