if (node.getElement().compareTo(tempNode.getElement()) > 0) {
                tempNode = tempNode.getRightSubTree();
                if (tempNode == null) {
                    tempNode.setRightSubTree(node);
                }
            } else if (node.getElement().compareTo(tempNode.getElement()) < 0) {
                tempNode = tempNode.getLeftSubTree();
                if (tempNode == null) {
                    tempNode.setLeftSubTree(node);
                }
            } else {
                System.out.println("Duplicate node");
                return false; // Duplicate node, not added
            }