Unable to use Weld for Context and Dependency Injection (CDI) in my stand alone Java SE application

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I am trying to make a standalone Java SE application with CDI. I followed<a href="https://randling.wordpress.com/2011/08/15/cdi-in-java-se/" rel="nofollow"> this</a> article and I am using Weld. However when I try to instantiate

Weld weld = new Weld();

I am getting the following ClassNotFound error.

Exception in thread "main" java.lang.NoClassDefFoundError: org/jboss/weld/environment/ContainerInstanceFactory
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.agorava.socializer.Test.main(Test.java:59)
Caused by: java.lang.ClassNotFoundException: org.jboss.weld.environment.ContainerInstanceFactory
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 13 more

I checked the weld-se JAR an it doesn't contain this Interface. What is the issue here? Thanks in advance.

Following is my Test class org.agorava.socializer.Test

public class Test  {

    public static void main(String[] args){

        Weld w = new Weld();
        WeldContainer factory = w.initialize();
        OAuthLifeCycleService service = factory.instance().select(OAuthLifeCycleService.class).get();
        System.out.println(service.getCurrentService());        

    }

}