Java tutorial
//package com.java2s; import javafx.scene.Node; import javafx.scene.Parent; import javafx.scene.control.Accordion; import javafx.scene.control.ScrollPane; import javafx.scene.control.SplitPane; import javafx.scene.control.Tab; import javafx.scene.control.TabPane; import javafx.scene.control.TitledPane; import javafx.scene.layout.BorderPane; public class Main { private static Node lookupInternal(Node node, String id) { if (id.equals(node.getId())) { return node; } if (node instanceof Parent) { for (Node child : ((Parent) node).getChildrenUnmodifiable()) { Node result = lookupInternal(child, id); if (result != null) { return result; } } if (node instanceof SplitPane) { SplitPane sp = (SplitPane) node; Node result = null; for (Node child : sp.getItems()) { result = lookupInternal(child, id); if (result != null) { return result; } } } if (node instanceof ScrollPane) { ScrollPane sp = (ScrollPane) node; Node result = null; if (sp.getContent() != null) { result = lookupInternal(sp.getContent(), id); if (result != null) { return result; } } } if (node instanceof BorderPane) { BorderPane sp = (BorderPane) node; Node result = null; if (sp.getBottom() != null) { result = lookupInternal(sp.getBottom(), id); if (result != null) { return result; } } if (sp.getTop() != null) { result = lookupInternal(sp.getTop(), id); if (result != null) { return result; } } if (sp.getLeft() != null) { result = lookupInternal(sp.getLeft(), id); if (result != null) { return result; } } if (sp.getRight() != null) { result = lookupInternal(sp.getRight(), id); if (result != null) { return result; } } if (sp.getCenter() != null) { result = lookupInternal(sp.getCenter(), id); if (result != null) { return result; } } } if (node instanceof TitledPane) { TitledPane sp = (TitledPane) node; Node result = null; if (sp.getContent() != null) { result = lookupInternal(sp.getContent(), id); if (result != null) { return result; } } } if (node instanceof Accordion) { Accordion sp = (Accordion) node; for (Node child : ((Accordion) node).getPanes()) { Node result = lookupInternal(child, id); if (result != null) { return result; } } } if (node instanceof TabPane) { TabPane bp = (TabPane) node; Node result = null; for (Tab tab : bp.getTabs()) { result = lookupInternal(tab.getContent(), id); if (result != null) { return result; } } } } return null; } }