"AWT-EventQueue-0" java.lang.StackOverflowError - While trying to create JTree folder structure

Question

I'm trying to build a JTree folder structure from a output. Here is the approach.

• I call a system
• get list of folders
• loop through list of folders and create a list
• create a folder structure from the list

This is working fine when the number of folders are less however when the number of folders are more it is throwing a stack overflow error.

private static DefaultMutableTreeNode builtTreeNode(String comptype) {
        try{
            List<Node> nodeList = new ArrayList<>();
            //Defin the configuration context
            APIObject[] fol =  //Call the other system to get folders;
            DefaultMutableTreeNode dmtNode = null;
            System.out.println(" Folder Size " +fol.length);
             for (int i = 0; i < fol.length; i++) { 
                    if(getParentFolder().getName() == null && !getParentFolder().getIsActive()){
                    dmtNode = new DefaultMutableTreeNode(df.getName().toString());
                    nodeList.add(new Node(df.getName().toString()));// Set the ROOT folder in nodelist
                }           
                if(getParentFolder().getName() != null ){
                                //nodeList.add(new Node("Child", "Parent")); 
                                //add remaining folders to nodelist
                                nodeList.add(new Node(df.getName(), df.getParentFolder().getName())); 
                            }               
             }       
             findChild(dmtNode, nodeList); //
             return dmtNode;            
            }
private static void findChild(DefaultMutableTreeNode parent, List<Node> list) {
        for (int i = 0; i < list.size(); i++) {
          if (list.get(i).parent != null && list.get(i).parent.equals(parent.toString())) {
            DefaultMutableTreeNode child = new DefaultMutableTreeNode();
            child = new DefaultMutableTreeNode(list.get(i).label);
            parent.add(child); // Getting exception from this line of code
            findChild(child, list); // child of child
          }
        }
      }