import javax.swing.*;
import java.awt.*;
import javax.swing.border.*;
import java.awt.event.*;

public class ExampleUsingJFC extends JFrame {

  public static void main(String[] argv) {
     ExampleUsingJFC myExample = new ExampleUsingJFC("ExampleUsingJFC");
   }	

  public ExampleUsingJFC(String title) {
     super(title);
     setSize(150,150);
     addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent we) { 
           dispose(); 
           System.exit(0);
         }
     });
     init(); 
     setVisible(true);
  }

  private void init() {
     JPanel my_panel = new JPanel();
     my_panel.setLayout(new GridLayout(3,3));
     for (int i=1;i<10;i++) {
	    ImageIcon icon = new ImageIcon(i+".gif");
	    JButton jb = new JButton(icon);
	    jb.setToolTipText(i+".gif");	
	    my_panel.add(jb);
     }		
     getContentPane().add(my_panel);		
     my_panel.setBorder(BorderFactory.createEtchedBorder());
   }
}

public void changeLookTo(String cName) {
 try {  
   UIManager.setLookAndFeel(cName); 
 }
 catch (Exception e) { 
   System.out.println("Could not change l&f"); 
 }
 SwingUtilities.updateComponentTreeUI(this);
 this.pack();
}

private void init() {
	JTabbedPane jtb = new JTabbedPane();
	for (int i=1;i<10;i++) {
	   ImageIcon icon = new ImageIcon(i+".gif");
	   ImageIcon icon2 = new ImageIcon(i+"a.jpg");
           JScrollPane jsp = new JScrollPane(new JLabel(icon2));	
	   jtb.addTab(i+"-tab",icon,jsp);
	}		
	getContentPane().add(jtb);		
	jtb.setBorder(BorderFactory.createEtchedBorder());
}

String data[][] = {	{"John","Sutherland","Student"}, 
			{"George","Davies","Student"},
			{"Melissa","Anderson","Associate"},
			{"Stergios","Maglaras","Developer"},
	            };

String fields[] = {"Name","Surname","Status"};

private void init() {
	
	JTable jt = new JTable(data,fields);
	JScrollPane pane = new JScrollPane(jt);
	getContentPane().add(pane);		
 }

private void init() {
   DefaultMutableTreeNode root = new DefaultMutableTreeNode("Calendar");
   DefaultMutableTreeNode months = new DefaultMutableTreeNode("Months");
   root.add(months);
   String monthLabels[] = {"January", "February", "March", "April", "May",
  		 	     "June", "July", "August", "September", "October",
			     "November", "December"};
   for (int i=0; i<monthLabels.length; i++) 
  	months.add( new DefaultMutableTreeNode(monthLabels[i]));
   DefaultMutableTreeNode weeks = new DefaultMutableTreeNode("Weeks");
   root.add(weeks);
   String weekLabels[] = {"Monday", "Tuesday", "Wednesday", "Thursday", 
			    "Friday", "Saturday", "Sunday"};
   for (int i=0; i<weekLabels.length; i++) 
   	weeks.add( new DefaultMutableTreeNode(weekLabels[i]));	
   JScrollPane js = new JScrollPane(new JTree(root));
   getContentPane().add(js);		
}

private void init() {
  JLayeredPane layers = new JDesktopPane();
  setLayeredPane(layers);
  for (int i=0; i<9; i++) {
    ImageIcon icon = new ImageIcon((i+1)+"a.jpg");	
    JScrollPane jsp = new JScrollPane(new JLabel(icon));
    jsp.setPreferredSize(new Dimension(120,140));
    //JInternalFrame(title, resizable, closable,maximizable, iconifiable)
    JInternalFrame jif = new JInternalFrame(i+" frame",true,true,true,true);
    jif.setLocation((i%4)*140,(i/4)*180);	
    jif.getContentPane().add(jsp);
    jif.pack();		
    layers.add(jif);  
  }
}