Having an object as an Entity attribute

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Is it possible to have an entity that has itself as an attribute?  An example from a piece of code I’m trying to recreate: (class Node has a constructor that takes as an argument an object of type Node)   Node(Node parent, int xpos, int ypos, double g, double h) { this.parent = parent;             this.x = xpos;             this.y = ypos;             this.g = g;             this.h = h;        }        
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Yep, that is what a self reference will do. Just drag a line from one corner of an entity to any other location on it’s border.

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Now I can access it an attribute through its Java class with the get() methods it generated. Thanks for the help!

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