How to populate multilevel jtree from database table

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Java

i have a database table like the following. I want to make dynamic jtree from the table.

id Name parent
1 color null
2 red 1
3 white 1
4 green 1
5 dark 4
6 light 4

What I have tried:

To retrieve the table from database i already written the code following.

while( rs.next() ) {  

 String parentId = rs.getString("node_Id");  
 String parentName = rs.getString("node_Name");
 String paren = rs.getString("node_Parent");
 int treeLvl = rs.getInt("node_Level");
// the above code is working perfectly fine, the problem start from here

 Map<String, DefaultMutableTreeNode> parentsMap
 = new HashMap<>();
    DefaultTreeModel tbl = (DefaultTreeModel) TreePro.getModel();
DefaultMutableTreeNode root = (DefaultMutableTreeNode)tbl.getRoot();

     DefaultMutableTreeNode Root = parentsMap.get(paren);

   Root = new DefaultMutableTreeNode( paren );

   parentsMap.put(parentId, Root );
   root.add(Root); 

 DefaultMutableTreeNode parent = parentsMap.get(parentName);

   parent = new DefaultMutableTreeNode( parentName );
   parentsMap.put(parentId, parent );
   Root.add(parent);

        }

Now it's creates jtree like this

Root
Null
-color
color
-red
color
-white
color
-green
green
-dark
green
-light
Obviously its wrong, how can i make jtree correctly from database table. Now i do hope i established my question in correct way