Java
JMS – A bit more detail
I do not want to go into a lot of detail here, because the JMS Documentation is very good. This post is more an abridged description, with working code. Install ActiveMQ First install ActiveMQ as per my previous post. Start ActiveMQ as per the instructions in the previous [code language=”java”] activemq restart [/code] Open the web …
Mac OSX Switch Java Version
/usr/libexec/java_home -V this will list all the Java Versions on the machine select the specific version using: export JAVA_HOME=`/usr/libexec/java_home -v 1.8.0_125` or just specify the major number export JAVA_HOME=`/usr/libexec/java_home -v 1.8` Now run java -version
Create a Maven Project
In this example we will create an empty Maven Java Project. Install Dependencies Install Java Install Maven Install IDE Eclipse Netbeans Intellij IDEA Create Maven Project Intellij IDE Step 1 Open Intellij IDE Step 2 Create New Project Maven leave Create from archetype unchecked Next Step 3 GroupId: -e.g. com.skills421.training ArtifactId: – e.g. MyProject Version: 1.0-SNAPSHOT …
Intellij IDEA, JUnit, set JUnit version in test class
@RunWith(JUnit4.class) public class MainTest extends TestCase { …
Java 8 and Lambda to Search a File
In this example we are going to read from a File and use Lambda expressions to search out and collect every line that contains a .foreach statement. Search Within a File Note that we are also using Java NIO and try-with-resources which makes use of the AutoCloseable interface. Source Code Full source code of a …
Playing with Lambda Functions
Java8 has introduced Lambda Functions. Whilst this looks a little overwhelming at first, it is a really useful feature. Create our Person POJO Person.java Create an Array of People People Array Print People Pre Java8 Java 8 but we know that p is of type Person because our List is List<Person> Sorting People Pre Java8 …
A Simple Page Not Found (404) Filter – Part 2
This post follows on from Part 1 Overview This post is all about back to basics with Servlets and Web Servers. Our scenario is very simple. Our user will request a given web page and if this is found then it will be returned. If it is not found, then the web page will be …
A Simple Page Not Found (404) Filter – Part 1
Continue to Part 2 Overview This post is all about back to basics with Servlets and Web Servers. Our scenario is very simple. Our user will request a given web page and if this is found then it will be returned. If it is not found, then the web page will be generated (if it should …
Drools EIP – From the Ground Up – Part 3 :: Camel Client
In this post we will update our client to use Camel to forward our request and response to the exposed web service. We already included all the dependencies we needed in Part2. So all that is required to is write the code: RequestClientUsingCamel RequestClientUsingCamel and here’s the output..