Java by API/javax.swing/JRootPane

JRootPane: addAncestorListener(AncestorListener listener)

   <source lang="java">

import javax.swing.JFrame; import javax.swing.event.AncestorEvent; import javax.swing.event.AncestorListener; public class Main {

 public static void main (String args[]) {
   JFrame f = new JFrame("Ancestor Sampler");
   f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   AncestorListener ancestorListener = new AncestorListener() {
     public void ancestorAdded(AncestorEvent ancestorEvent) {
       System.out.println ("Added");
     }
     public void ancestorMoved(AncestorEvent ancestorEvent) {
       System.out.println ("Moved");
     }
     public void ancestorRemoved(AncestorEvent ancestorEvent) {
       System.out.println ("Removed");
     }
   };
   f.getRootPane().addAncestorListener(ancestorListener);
   f.getRootPane().setVisible(false);
   f.getRootPane().setVisible(true);
   f.setSize (300, 200);
   f.setVisible (true);
 }

}

 </source>
   
  
 
  

JRootPane.FRAME

   <source lang="java">

import javax.swing.JFrame; import javax.swing.JRootPane; public class MainClass {

 public static void main(final String args[]) {
   JFrame frame = new JFrame("Adornment Example");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setUndecorated(true);
   frame.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);
   frame.setSize(300, 100);
   frame.setVisible(true);
 }

}

 </source>
   
  
 
  

JRootPane: getAccessibleContext()

   <source lang="java">

import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.accessibility.AccessibleContext; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JFrame implements ActionListener {

 JButton jb;
 MainClass(String title) {
   super(title);
   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   AccessibleContext ac = getAccessibleContext();
   ac.setAccessibleDescription("Accessibility Demo1 description.");
   ac = getRootPane().getAccessibleContext();
   ac.setAccessibleName("Root pane");
   ac.setAccessibleDescription("Root pane description");
   ac = getGlassPane().getAccessibleContext();
   ac.setAccessibleName("Glass pane");
   ac.setAccessibleDescription("Glass pane description");
   ac = getLayeredPane().getAccessibleContext();
   ac.setAccessibleName("Layered pane");
   ac.setAccessibleDescription("Layered pane description");
   ac = getContentPane().getAccessibleContext();
   ac.setAccessibleName("Content pane");
   ac.setAccessibleDescription("Content pane description");
   JPanel p = new JPanel();
   ac = p.getAccessibleContext();
   ac.setAccessibleName("Panel");
   ac.setAccessibleDescription("Panel description");
   jb = new JButton("Press Me");
   jb.addActionListener(this);
   jb.setToolTipText("Press me for accessibility information.");
   p.add(jb);
   getContentPane().add(p);
   setSize(200, 75);
   setVisible(true);
 }
 public void actionPerformed(ActionEvent e) {
   dumpInfo(getAccessibleContext());
 }
 void dumpInfo(AccessibleContext ac) {
   System.out.println("Name = " + ac.getAccessibleName());
   System.out.println("Description = " + ac.getAccessibleDescription());
   int nChildren = ac.getAccessibleChildrenCount();
   for (int i = 0; i < nChildren; i++)
     dumpInfo(ac.getAccessibleChild(i).getAccessibleContext());
 }
 public static void main(String[] args) {
   new MainClass("Accessibility Demo1");
 }

}

 </source>
   
  
 
  

JRootPane: getContentPane()

   <source lang="java">

import java.awt.Container; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JRootPane; public class MainClass {

 public static void main(String[] args) {
   JFrame f = new JFrame();
   f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JRootPane root = f.getRootPane(); 
   Container content = root.getContentPane(); 
   content.add(new JButton("Hello")); 
   f.pack();
   f.setVisible(true);
 }

}

 </source>
   
  
 
  

JRootPane: setDefaultButton(JButton defaultButton)

   <source lang="java">

import java.awt.Dimension; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JPanel; public class Main extends JPanel {

 public static void main(String[] a) {
   JDialog f = new JDialog();
   f.addWindowListener(new WindowAdapter() {
     public void windowClosing(WindowEvent e) {
       System.exit(0);
     }
   });
   JButton btOK = new JButton("Press Enter to click me, I am the default.");
   btOK.setToolTipText("Save and exit");
   f.getRootPane().setDefaultButton(btOK);
   JPanel p = new JPanel();
   p.add(btOK);
   p.add(new JButton("I am NOT the default."));
   f.getContentPane().add(p);
   f.pack();
   f.setSize(new Dimension(300, 200));
   f.setVisible(true);
 }

}

 </source>
   
  
 
  

JRootPane: setWindowDecorationStyle(int style)

   <source lang="java">

import javax.swing.JFrame; import javax.swing.JRootPane; public class MainClass {

 public static void main(final String args[]) {
   JFrame frame = new JFrame("Adornment Example");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setUndecorated(true);
   frame.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);
   frame.setSize(300, 100);
   frame.setVisible(true);
 }

}

 </source>