Use tray Icon in java

import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import javax.swing.*;

public class TrayIconDemo {
    public static void main(String[] args) {
        /* Use an appropriate Look and Feel */
        try {
            UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
            //UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
        } catch (UnsupportedLookAndFeelException ex) {
            ex.printStackTrace();
        } catch (IllegalAccessException ex) {
            ex.printStackTrace();
        } catch (InstantiationException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        }
        /* Turn off metal's use of bold fonts */
        UIManager.put("swing.boldMetal", Boolean.FALSE);
        //Schedule a job for the event-dispatching thread:
        //adding TrayIcon.
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }

    private static void createAndShowGUI() {
        //Check the SystemTray support
        if (!SystemTray.isSupported()) {
            System.out.println("SystemTray is not supported");
            return;
        }
        final PopupMenu popup = new PopupMenu();
        final TrayIcon trayIcon =
                new TrayIcon(createImage("images/bulb.gif", "tray icon"));
        final SystemTray tray = SystemTray.getSystemTray();

        // Create a popup menu components
        MenuItem aboutItem = new MenuItem("About");
        CheckboxMenuItem cb1 = new CheckboxMenuItem("Set auto size");
        CheckboxMenuItem cb2 = new CheckboxMenuItem("Set tooltip");
        Menu displayMenu = new Menu("Display");
        MenuItem errorItem = new MenuItem("Error");
        MenuItem warningItem = new MenuItem("Warning");
        MenuItem infoItem = new MenuItem("Info");
        MenuItem noneItem = new MenuItem("None");
        MenuItem exitItem = new MenuItem("Exit");

        //Add components to popup menu
        popup.add(aboutItem);
        popup.addSeparator();
        popup.add(cb1);
        popup.add(cb2);
        popup.addSeparator();
        popup.add(displayMenu);
        displayMenu.add(errorItem);
        displayMenu.add(warningItem);
        displayMenu.add(infoItem);
        displayMenu.add(noneItem);
        popup.add(exitItem);

        trayIcon.setPopupMenu(popup);

        try {
            tray.add(trayIcon);
        } catch (AWTException e) {
            System.out.println("TrayIcon could not be added.");
            return;
        }

        trayIcon.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(null,
                        "This dialog box is run from System Tray");
            }
        });

        aboutItem.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(null,
                        "This dialog box is run from the About menu item");
            }
        });

        cb1.addItemListener(new ItemListener() {
            public void itemStateChanged(ItemEvent e) {
                int cb1Id = e.getStateChange();
                if (cb1Id == ItemEvent.SELECTED){
                    trayIcon.setImageAutoSize(true);
                } else {
                    trayIcon.setImageAutoSize(false);
                }
            }
        });

        cb2.addItemListener(new ItemListener() {
            public void itemStateChanged(ItemEvent e) {
                int cb2Id = e.getStateChange();
                if (cb2Id == ItemEvent.SELECTED){
                    trayIcon.setToolTip("Ali TrayIcon");
                } else {
                    trayIcon.setToolTip(null);
                }
            }
        });

        ActionListener listener = new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                MenuItem item = (MenuItem)e.getSource();
                //TrayIcon.MessageType type = null;
                System.out.println(item.getLabel());
                if ("Error".equals(item.getLabel())) {
                    //type = TrayIcon.MessageType.ERROR;
                    trayIcon.displayMessage("Ali TrayIcon Demo",
                            "This is an error message", TrayIcon.MessageType.ERROR);

                } else if ("Warning".equals(item.getLabel())) {
                    //type = TrayIcon.MessageType.WARNING;
                    trayIcon.displayMessage("Ali TrayIcon Demo",
                            "This is a warning message", TrayIcon.MessageType.WARNING);

                } else if ("Info".equals(item.getLabel())) {
                    //type = TrayIcon.MessageType.INFO;
                    trayIcon.displayMessage("Ali TrayIcon Demo",
                            "This is an info message", TrayIcon.MessageType.INFO);

                } else if ("None".equals(item.getLabel())) {
                    //type = TrayIcon.MessageType.NONE;
                    trayIcon.displayMessage("Ali TrayIcon Demo",
                            "This is an ordinary message", TrayIcon.MessageType.NONE);
                }
            }
        };

        errorItem.addActionListener(listener);
        warningItem.addActionListener(listener);
        infoItem.addActionListener(listener);
        noneItem.addActionListener(listener);

        exitItem.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                tray.remove(trayIcon);
                System.exit(0);
            }
        });
    }

    //Obtain the image URL
    protected static Image createImage(String path, String description) {
        URL imageURL = TrayIconDemo.class.getResource(path);

        if (imageURL == null) {
            System.err.println("Resource not found: " + path);
            return null;
        } else {
            return (new ImageIcon(imageURL, description)).getImage();
        }
    }
}

Image to be display

File Download in java

import java.io.*;
import java.net.*;

/*
 * Command line program to download data from URLs and save
 * it to local files. Run like this:
 * java FileDownload http://schmidt.devlib.org/java/file-download.html
 * @author Marco Schmidt
 */
public class FileDownload {
 public static void download(String address, String localFileName) {
  OutputStream out = null;
  URLConnection conn = null;
  InputStream  in = null;
  try {
   URL url = new URL(address);
   out = new BufferedOutputStream(
    new FileOutputStream(localFileName));
   conn = url.openConnection();
   in = conn.getInputStream();
   byte[] buffer = new byte[1024];
   int numRead;
   long numWritten = 0;
   while ((numRead = in.read(buffer)) != -1) {
    out.write(buffer, 0, numRead);
    numWritten += numRead;
   }
   System.out.println(localFileName + "\t" + numWritten);
  } catch (Exception exception) {
   exception.printStackTrace();
  } finally {
   try {
    if (in != null) {
     in.close();
    }
    if (out != null) {
     out.close();
    }
   } catch (IOException ioe) {
   }
  }
 }

 public static void download(String address) {
  int lastSlashIndex = address.lastIndexOf('/');
  if (lastSlashIndex >= 0 &&
      lastSlashIndex < address.length() - 1) {
   download(address, address.substring(lastSlashIndex + 1));
  } else {
   System.err.println("Could not figure out local file name for " +
    address);
  }
 }

 public static void main(String[] args) {
  for (int i = 0; i < args.length; i++) {
   download(args[i]);
  }
 }
}

cofee cup in JavaFX

In netbaeans create project for javafx and paste this code:

import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.paint.Color;
import javafx.scene.Group;
import javafx.scene.paint.Color;
import javafx.scene.shape.*;
import javafx.scene.paint.Stop;
import javafx.scene.paint.RadialGradient;

def BGCOLOR = Color.BLACK;

def plateGroup = Group {

    translateX: 250
    translateY: 300

    content: [

         // The gray ellipse under the plate
         Ellipse{centerX:0 centerY:10 radiusX:160 radiusY:50 fill:Color.DIMGRAY},

         // The thin "lip" of the plate (provides a sense of 3D)
         Ellipse{centerX:0 centerY:3  radiusX:170 radiusY:50 fill:Color.LAVENDER},

         // The large plate ellipse
         Ellipse{centerX:0 centerY:0  radiusX:170 radiusY:50
         fill:RadialGradient{
                   centerX:0.5 centerY:0.75
                   stops:[Stop {offset: 0.0 color: Color.WHITESMOKE},
                          Stop {offset: 0.5 color: Color.LIGHTGRAY},
                          Stop {offset: 1.0 color: Color.DARKGRAY}]
              }
         },

         // Recessed plate center
          Ellipse{
               centerX:0 centerY:5 radiusX:90 radiusY:22
               fill:RadialGradient{
                         centerX:0.5 centerY:0.75
                         stops:[Stop {offset: 0.0 color: Color.BLACK},
                                Stop {offset: 0.4 color: Color.LIGHTGRAY},
                                Stop {offset: 1.0 color: Color.GHOSTWHITE}]
                    }
         }
    ]
}

def cupGroup = Group {

    translateX: 152
    translateY: 20
    scaleX: 3.0
    scaleY: 4.0

    content: [
              // Cup body
              Circle {centerX: 100  centerY: 100 radius: 50
                   fill: RadialGradient {
                              centerX: 0.4 centerY: 0.0 focusX: 0.5 focusY:.65, proportional:true
                              stops: [Stop {offset: 0.0 color: Color.GHOSTWHITE},
                                      Stop {offset: 1.0 color: Color.SILVER}]
                            }
                     },

              // Cut top of cup
              Rectangle{stroke: BGCOLOR fill: BGCOLOR
                        x:25 y:50 width:150 height:50},

              // Outer rim
              Ellipse{fill: Color.WHITE centerX:100 centerY:100 radiusX:50 radiusY:8},

              // Inner rim
              Ellipse{centerX:100 centerY:100 radiusX:48 radiusY:7 //inner rim
                      fill: RadialGradient {
                                            centerX: 0.4 centerY: 0.0 focusX: 0.5 focusY:.4, proportional:true
                                            stops: [Stop {offset: 0.0 color: Color.GHOSTWHITE},
                                                    Stop {offset: 1.0 color: Color.SILVER}]
                      }
              },

              // Create "coffee in cup" by intersecting coffee ellipse with inner rim ellipse
              ShapeIntersect {

                   fill:Color.SADDLEBROWN

                   //Inner Rim
                   a: Ellipse{centerX:100 centerY:100 radiusX:48 radiusY:7} // inner rim dimensions

                   //Coffee
                   b: Ellipse{centerX:100 centerY:102 radiusX:46 radiusY:6} // coffee dimensions
              }
    ]
}

Stage {
   title: "Coffee Cup"
   width: 500
   height: 500
   visible: true
   scene: Scene {
        fill: BGCOLOR
        content: [plateGroup,cupGroup]
    }
}

Thumbnail Creator

import java.awt.Container;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.RenderingHints;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

public class ThumbNail2 {
   

    public void createThumbnail(String imgFilePath, String thumbPath,
            int thumbWidth, int thumbHeight) throws Exception {

        Image image = Toolkit.getDefaultToolkit().getImage(imgFilePath);
        MediaTracker mediaTracker = new MediaTracker(new Container());
        mediaTracker.addImage(image, 0);
        mediaTracker.waitForID(0);
        double thumbRatio = (double) thumbWidth / (double) thumbHeight;
        int imageWidth = image.getWidth(null);
        int imageHeight = image.getHeight(null);
        double imageRatio = (double) imageWidth / (double) imageHeight;
        if (thumbRatio < imageRatio) {
            thumbHeight = (int) (thumbWidth / imageRatio);
        } else {
            thumbWidth = (int) (thumbHeight * imageRatio);
        }
        BufferedImage thumbImage = new BufferedImage(thumbWidth, thumbHeight,
                BufferedImage.TYPE_INT_RGB);
        Graphics2D graphics2D = thumbImage.createGraphics();
        graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
                RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);
        BufferedOutputStream out = new BufferedOutputStream(
                new FileOutputStream(thumbPath));
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
        JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(thumbImage);
        int quality = 100;
        param.setQuality((float) quality / 100.0f, false);
        encoder.setJPEGEncodeParam(param);
        encoder.encode(thumbImage);
        out.close();
    }
   
    public static void main(String[] args) throws Exception {
        new ThumbNail2().createThumbnail("1.jpg",
                "thumb1.jpg", 50, 30);
        System.out.println("Thumbnail Created Successfully");
    }   
}

How to use tryIcon in java

package trayicondemo;

import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import javax.swing.*;

public class TrayIconDemo {
    public static void main(String[] args) {
        /* Use an appropriate Look and Feel */
        try {
            UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
            //UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
        } catch (UnsupportedLookAndFeelException ex) {
            ex.printStackTrace();
        } catch (IllegalAccessException ex) {
            ex.printStackTrace();
        } catch (InstantiationException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        }
        /* Turn off metal's use of bold fonts */
        UIManager.put("swing.boldMetal", Boolean.FALSE);
        //Schedule a job for the event-dispatching thread:
        //adding TrayIcon.
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }

    private static void createAndShowGUI() {
        //Check the SystemTray support
        if (!SystemTray.isSupported()) {
            System.out.println("SystemTray is not supported");
            return;
        }
        final PopupMenu popup = new PopupMenu();
        final TrayIcon trayIcon =
                new TrayIcon(createImage("images/bulb.gif", "tray icon"));
        final SystemTray tray = SystemTray.getSystemTray();

        // Create a popup menu components
        MenuItem aboutItem = new MenuItem("About");
        CheckboxMenuItem cb1 = new CheckboxMenuItem("Set auto size");
        CheckboxMenuItem cb2 = new CheckboxMenuItem("Set tooltip");
        Menu displayMenu = new Menu("Display");
        MenuItem errorItem = new MenuItem("Error");
        MenuItem warningItem = new MenuItem("Warning");
        MenuItem infoItem = new MenuItem("Info");
        MenuItem noneItem = new MenuItem("None");
        MenuItem exitItem = new MenuItem("Exit");

        //Add components to popup menu
        popup.add(aboutItem);
        popup.addSeparator();
        popup.add(cb1);
        popup.add(cb2);
        popup.addSeparator();
        popup.add(displayMenu);
        displayMenu.add(errorItem);
        displayMenu.add(warningItem);
        displayMenu.add(infoItem);
        displayMenu.add(noneItem);
        popup.add(exitItem);

        trayIcon.setPopupMenu(popup);

        try {
            tray.add(trayIcon);
        } catch (AWTException e) {
            System.out.println("TrayIcon could not be added.");
            return;
        }

        trayIcon.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(null,
                        "This dialog box is run from System Tray");
            }
        });

        aboutItem.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(null,
                        "This dialog box is run from the About menu item");
            }
        });

        cb1.addItemListener(new ItemListener() {
            public void itemStateChanged(ItemEvent e) {
                int cb1Id = e.getStateChange();
                if (cb1Id == ItemEvent.SELECTED){
                    trayIcon.setImageAutoSize(true);
                } else {
                    trayIcon.setImageAutoSize(false);
                }
            }
        });

        cb2.addItemListener(new ItemListener() {
            public void itemStateChanged(ItemEvent e) {
                int cb2Id = e.getStateChange();
                if (cb2Id == ItemEvent.SELECTED){
                    trayIcon.setToolTip("Ali TrayIcon");
                } else {
                    trayIcon.setToolTip(null);
                }
            }
        });

        ActionListener listener = new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                MenuItem item = (MenuItem)e.getSource();
                //TrayIcon.MessageType type = null;
                System.out.println(item.getLabel());
                if ("Error".equals(item.getLabel())) {
                    //type = TrayIcon.MessageType.ERROR;
                    trayIcon.displayMessage("Ali TrayIcon Demo",
                            "This is an error message", TrayIcon.MessageType.ERROR);

                } else if ("Warning".equals(item.getLabel())) {
                    //type = TrayIcon.MessageType.WARNING;
                    trayIcon.displayMessage("Ali TrayIcon Demo",
                            "This is a warning message", TrayIcon.MessageType.WARNING);

                } else if ("Info".equals(item.getLabel())) {
                    //type = TrayIcon.MessageType.INFO;
                    trayIcon.displayMessage("Ali TrayIcon Demo",
                            "This is an info message", TrayIcon.MessageType.INFO);

                } else if ("None".equals(item.getLabel())) {
                    //type = TrayIcon.MessageType.NONE;
                    trayIcon.displayMessage("Ali TrayIcon Demo",
                            "This is an ordinary message", TrayIcon.MessageType.NONE);
                }
            }
        };

        errorItem.addActionListener(listener);
        warningItem.addActionListener(listener);
        infoItem.addActionListener(listener);
        noneItem.addActionListener(listener);

        exitItem.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                tray.remove(trayIcon);
                System.exit(0);
            }
        });
    }

    //Obtain the image URL
    protected static Image createImage(String path, String description) {
        URL imageURL = TrayIconDemo.class.getResource(path);

        if (imageURL == null) {
            System.err.println("Resource not found: " + path);
            return null;
        } else {
            return (new ImageIcon(imageURL, description)).getImage();
        }
    }
}