Example usage for javax.swing JTree JTree

Introduction

In this page you can find the example usage for javax.swing JTree JTree.

Prototype

@ConstructorProperties({ "model" })
public JTree(TreeModel newModel)

Source Link

Document

Returns an instance of JTree which displays the root node -- the tree is created using the specified data model.

Usage

From source file:TreeExpansionListenerDemo.java

public static void main(String args[]) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    root.add(new DefaultMutableTreeNode("A"));
    root.add(new DefaultMutableTreeNode("B"));
    root.add(new DefaultMutableTreeNode("C"));
    JTree tree = new JTree(root);

    TreeExpansionListener treeExpandListener = new TreeExpansionListener() {

        public void treeExpanded(TreeExpansionEvent event) {
            TreePath path = event.getPath();
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
            String data = node.getUserObject().toString();
            System.out.println("Expanded: " + data);
        }//from ww  w.j  a v  a2s  .com

        public void treeCollapsed(TreeExpansionEvent event) {
            TreePath path = event.getPath();
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
            String data = node.getUserObject().toString();
            System.out.println("Collapsed: " + data);
        }
    };

    tree.addTreeExpansionListener(treeExpandListener);

    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);

}

From source file:Main.java

public static void main(String args[]) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    root.add(new DefaultMutableTreeNode("A"));
    root.add(new DefaultMutableTreeNode("B"));
    root.add(new DefaultMutableTreeNode("C"));
    JTree tree = new JTree(root);

    TreeWillExpandListener treeWillExpandListener = new TreeWillExpandListener() {
        public void treeWillCollapse(TreeExpansionEvent treeExpansionEvent) throws ExpandVetoException {
            TreePath path = treeExpansionEvent.getPath();
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
            String data = node.getUserObject().toString();
            System.out.println("WillCollapse: " + data);

        }//from  ww w  .  j  ava 2s. c  o  m

        public void treeWillExpand(TreeExpansionEvent treeExpansionEvent) throws ExpandVetoException {
            TreePath path = treeExpansionEvent.getPath();
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
            String data = node.getUserObject().toString();
            System.out.println("WillExpand: " + data);

        }
    };

    tree.addTreeWillExpandListener(treeWillExpandListener);

    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);

}

From source file:Main.java

public static void main(String[] args) {
    JFrame frame = new JFrame();
    final JTree tree = new JTree(buildDemoModel());

    tree.setCellRenderer(new DefaultTreeCellRenderer() {
        private Icon loadIcon = UIManager.getIcon("OptionPane.errorIcon");
        private Icon saveIcon = UIManager.getIcon("OptionPane.informationIcon");

        @Override/*  w w w  .  j  a v a2  s.c o  m*/
        public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected,
                boolean expanded, boolean isLeaf, int row, boolean focused) {
            Component c = super.getTreeCellRendererComponent(tree, value, selected, expanded, isLeaf, row,
                    focused);
            if (selected)
                setIcon(loadIcon);
            else
                setIcon(saveIcon);
            return c;
        }
    });
    tree.setVisibleRowCount(10);
    frame.add(new JScrollPane(tree));
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
}

From source file:PrintDescendants.java

public static void main(String args[]) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    DefaultMutableTreeNode mercury = new DefaultMutableTreeNode("Mercury");
    root.add(mercury);// w  ww .  j  a  va 2s . c  om
    DefaultMutableTreeNode venus = new DefaultMutableTreeNode("Venus");
    root.add(venus);
    DefaultMutableTreeNode mars = new DefaultMutableTreeNode("Mars");
    root.add(mars);
    JTree tree = new JTree(root);

    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);

    printDescendants(root);
}

From source file:Main.java

public static void main(String[] args) {

    DefaultMutableTreeNode root = new DefaultMutableTreeNode(Boolean.TRUE);
    DefaultMutableTreeNode child1 = new DefaultMutableTreeNode(Boolean.FALSE);
    DefaultMutableTreeNode child2 = new DefaultMutableTreeNode(Boolean.FALSE);
    root.add(child1);//from   w w w. j a  v a2  s .c om
    root.add(child2);
    DefaultTreeModel model = new DefaultTreeModel(root);

    JTree tree = new JTree(model);
    tree.setCellRenderer(new TreeRenderer());

    tree.addMouseListener(new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent e) {
            TreePath pathForLocation = tree.getPathForLocation(e.getX(), e.getY());
            Object lastPathComponent = pathForLocation.getLastPathComponent();
            if (lastPathComponent instanceof DefaultMutableTreeNode) {
                Boolean oldObject = (Boolean) ((DefaultMutableTreeNode) lastPathComponent).getUserObject();
                ((DefaultMutableTreeNode) lastPathComponent).setUserObject(!oldObject);
                model.nodeChanged((DefaultMutableTreeNode) lastPathComponent);
            }
        }
    });

    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().setLayout(new BorderLayout());
    frame.getContentPane().add(tree, BorderLayout.CENTER);
    frame.setSize(800, 600);
    frame.setVisible(true);
}

From source file:DynamicUtilTreeNodeDemo.java

public static void main(String args[]) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    Hashtable<String, Object> hashtable = new Hashtable<String, Object>();
    hashtable.put("Two", new String[] { "A", "B", "C" });

    Hashtable<Object, Object> innerHashtable = new Hashtable<Object, Object>();

    innerHashtable.put("Two", new String[] { "A", "B", "C" });

    hashtable.put("Three", innerHashtable);
    JTree.DynamicUtilTreeNode.createChildren(root, hashtable);
    JTree tree = new JTree(root);

    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);/*from ww w . jav a2  s.c  o  m*/
    frame.setVisible(true);

}

From source file:Main.java

public static void main(String[] args) {
    JFrame frame = new JFrame(Main.class.getSimpleName());
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    final JTree tree = new JTree(createTreeModel(new File(System.getProperty("user.dir")), true));
    tree.setCellRenderer(new DefaultTreeCellRenderer() {
        @Override//w  w  w  .  j  av a2 s . c  o m
        public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded,
                boolean leaf, int row, boolean hasFocus) {
            super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
            if (value instanceof DefaultMutableTreeNode) {
                DefaultMutableTreeNode node = (DefaultMutableTreeNode) value;
                if (node.getUserObject() instanceof File) {
                    setText(((File) node.getUserObject()).getName());
                }
            }
            return this;
        }
    });
    tree.getSelectionModel().addTreeSelectionListener(e -> {
        Object object = tree.getLastSelectedPathComponent();
        if (object instanceof DefaultMutableTreeNode) {
            Object userObject = ((DefaultMutableTreeNode) object).getUserObject();
            if (userObject instanceof File) {
                File file = (File) userObject;
                System.out.println(
                        "Selected file" + file.getAbsolutePath() + " Is directory? " + file.isDirectory());
            }
        }
    });
    JScrollPane pane = new JScrollPane(tree);
    frame.add(pane);
    frame.setSize(400, 600);
    frame.setVisible(true);
}

From source file:MainClass.java

public static void main(final String args[]) {
    JFrame frame = new JFrame("DynamicUtilTreeNode Hashtable");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");

    Hashtable<Object, Object> hashtable = new Hashtable<Object, Object>();
    hashtable.put("A", args);
    hashtable.put("B", new String[] { "a", "b", "c" });
    Hashtable<Object, Object> innerHashtable = new Hashtable<Object, Object>();
    Properties props = System.getProperties();
    innerHashtable.put(props, props);//from w w w  .j  a  v a2  s  . c  o m
    hashtable.put("C", innerHashtable);

    JTree.DynamicUtilTreeNode.createChildren(root, hashtable);

    JTree tree = new JTree(root);

    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    Node root = new Node("Root");
    fillTree(root, 5, "tree label");
    DefaultTreeModel model = new DefaultTreeModel(root);

    JTree tree = new JTree(model);
    ToolTipManager.sharedInstance().registerComponent(tree);
    tree.setCellRenderer(new MyTreeCellRenderer());
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.add(new JScrollPane(tree));
    f.pack();/*  w  w  w .  j  a v a  2  s.  co m*/
    f.setVisible(true);
}

From source file:TreeNodeVector.java

public static void main(final String args[]) {
    JFrame frame = new JFrame("JTreeSample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    Vector<String> v1 = new TreeNodeVector<String>("Two", new String[] { "Mercury", "Venus", "Mars" });
    Vector<Object> v2 = new TreeNodeVector<Object>("Three");
    v2.add(System.getProperties());
    v2.add(v1);//from  ww  w.ja va 2  s . co  m
    Object rootNodes[] = { v1, v2 };
    Vector<Object> rootVector = new TreeNodeVector<Object>("Root", rootNodes);
    JTree tree = new JTree(rootVector);
    frame.add(new JScrollPane(tree), BorderLayout.CENTER);
    frame.setSize(300, 300);
    frame.setVisible(true);
}