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.

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