Simple Java
Component in Mule

How to use Java in Mule
• Ever wonder how to use your own java class or
utility in mule? Here is a simple sample on how to
use a java component or class in mule.
• This project used mule 3.8 and 6.0
anypointstudio.

Building your Java
Component
• Assuming that you already created a new
project. In this sample, I created a project
named “simplejavacomponent”.

• Also created a package for the java class i will
create.

• Based from the previous slide, I created a class
named “SimpleJavaComponent”.
• Also implement an interface named “Callable”
from org.mule.api.lifecycle. You need this inherit
classes by overriding the method “onCall” with a
parameter name “MuleEventContext”.
• The override method simply returns any object or
Object.

• In the previous slide, I simply get the current
MuleMessage from the eventContext or
MuleEventContext.
• Then I get the current payload and Cast it in a
String. Then I simply return a String payload just to
showcase how to call a java component. You can
return any objects in onCall.
• You can used this functionality if you want to get
values from current payload and manipulate those
values to a new payload or simply regenerate the
current payload to correct or format some values.

END