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Let's start from the root of the hierarchical tree structure, so we have the worker interface here

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that has only a method that will be implemented into leaf objects.

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And we also have to leave objects, the human and the robot, both are kind of the same.

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They have two properties, only the name and department.

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We have the implementation of the preferred method with a single outline just for the sake of simplicity.

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We have getters and setters for each property and a two string method that will be used in the main

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method to output the name and the department of each robot and human worker.

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We also have the composite class and here it is.

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It implements the worker and has the methods for dealing with adding and removing workers such as human

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and robot employees.

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And also it has the two string method that we see here which outputs the names or and the departments

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of all the human and robot employees.

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So let's see the main method here.

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So basically we create a human and a robot with a name and department and also a work manager that will

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add the human and the robots in the corresponding lists.

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And also the CSA will output the all the things that are contained in that list.

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So let's see this in action.

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Let's run this main method so we can see that the human workers are and we get the name the two string

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implementation of the human class and the robot workers are this one two string representation of the

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robot class.

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That's it.

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Four for the composite pattern.

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And join me in the next video where we are going to discuss about decorator's.

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So see you in the next tutorial.