Deadly Combination

Yes, Deadly combination!! It doesn't means that there would some super stars of the film who would go the devil place and finish him. No No !! I am talking about the deadly combination used in the development of the web sites. I am talking about the tools used for the Java development. Any guesses so far.... Yes, they are Struts2, Spring, and Hibernate I am currently working all these tools. I am amazed to see the power of all the three technologies and how they makes the life of a developer like me, so easy. All of three would make your project a huge success. Now talking about Struts2... It is great framework with the inbuilt Ajax tags that would help many developers. Many new features of the struts2 are marvelous. Hibernate... I already told in my last post about this. Hibernate would provide you a greater facility for your data persistence. its in built architecture that is fully object oriented which makes it a powerful tool. And yes, not to forget about the HQL (Hibernate Query Language). Spring... Again a master piece framework which lets you to do handle hibernate and specially the IOC (Inversion of Control) that lets programmers to walk to the higher level. Spring have many in built functionalities that help in various ways. One of them is scheduling of tasks. Before this you have to do manually write lots of code but now with a fewer code you can achieve greater flexibility. So enjoy working with the deadly combination

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Getting height and width of image in Java

Yesterday I was working on something that requires manipulation of image for getting its properties. After searching over the internet I found a very intersting class on Java i.e ImageIO and BufferedImage class. These classes are good enough to manipulate images. there are many other claases also. But what I need i got it from these. I found many developers searching over internet for getting properties of image and there is no good small example for that. Thats why I thought why not creating a simple code to manipulate the image and help the developers. Here is the small code that helps to get the height and width of the image. Enjoy it!! import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; public class GetImage { public static void main(String[] args) { try { File f = new File("E:/Vinod/Docs/Pics/krishna_01.jpg"); BufferedImage image = ImageIO.read(f); int height = image.getHeight(); in

SSL in Spring Boot using GoDaddy certificate on EC2

In this article, we will be going to see how we can achieve the HTTPS in the spring boot application . You will get lots of items on how to use the self-generated certificate with Spring Boot. But today we are going to use the CA generated certificates with the Spring Boot so that our application will work on HTTPS. We need the following things to work: CA certificates including, private key and certificate. In this article, we are using the GoDaddy wild card certificate. Spring Boot application OpenSSL library Convert the certificate and private key to PKCS 12 First of all, we need to convert the CA certificate to .p12 format . We need to have OpenSSL on the system to work with command. Also, we need to have all files in the same directory where we are running this command. The command required to covert the same: openssl pkcs12 -export -in [ceritificate-name] -inkey [private-key] -name [host] -out [new-file.p12] Here replace the values: [ceritificate-name] with

Struts 2 Hello World Example

I had seen many new deveopers struggling against struts2 hello world example. So I decided to write a small example. Below are the required libraries to run this example which are easily availabel struts2-core-2.1.8.1 xwork-core-2.1.6 commons-logging-1.0.4 commons-logging-api-1.1 freemarker-2.3.8 ognl-2.7.3 commons-fileupload-1.2 The structure of the applictaion which I am following is (Eclipse IDE) Struts2Demo |---src | |----org | | |----vinod | | | |----action | | | | |----HelloWorld।java |---struts.xml |---WebContent | |---jsp | |---HelloWorld।jsp |---index.jsp |---WEB-INF | |---lib | |---web.xml Struts 2 in Action It is true that different IDE's use different structure, but at last when war is build they follow same structure. Lets start... HelloWorld.java import com.opensymphony.xwork2.ActionSupport; public class HelloWorld extends ActionSupport { String greetings = null; public String execute() throws Exception { setGreetings("Hel

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