int[]
A node is represented with a node number, an index to access name code, parent node number, type code, first child index, number of children, child node numbers, first attribute index, number of attributes and attribute node numbers.
Linked int[]
A node is represented as an integer number, an index to access the name code, parent node number, type code, first child node number, next and previous sibling node number and the first attribute node number.
Linked Node Object
A node is represented as an object with name code, parent, first child, next sibling, previous sibling and first attribute node reference.
DOM Implementation
Simple Node Object
1obj+2arr+4ref+1int = 52Bytes
The object (2 refs), 2 arrays (2x3 refs), parent, children, attribute refs, 1 ref in the parent's child or attribute array and 1 integer name code.
array fragmentation
Manage by the JVM memory manager.
int[]
A node is represented with a node number, an index to access name code, parent node number, type code, first child index, number of children, child node numbers, first attribute index, number of attributes and attribute node numbers.

A node is modeled as a simple class with name code attribute, parent node reference, child node array and attribute set.

/livcos.org/data/map/brainstorm/DomImplementation