Define component

public class ACmp extends NodeComponent {

    @Override
    public void process() {
        //do your business
    }
}

And so on to define the b and c components:

public class BCmp extends NodeComponent {

	@Override
	public void process() {
		//do your business
	}
}

public class CCmp extends NodeComponent {

	@Override
	public void process() {
		//do your business
	}
}

Configuration of rule files

<?xml version="1.0" encoding="UTF-8"?>
<flow>
	<nodes>
		<node id="a" class="com.yomahub.liteflow.test.component.AComponent"/>
		<node id="b" class="com.yomahub.liteflow.test.component.BComponent"/>
		<node id="c" class="com.yomahub.liteflow.test.component.CComponent"/>
	</nodes>
	
	<chain name="chain1">
		THEN(a, b, c);
	</chain>
</flow>