Writing Image in the clipboard to Oracle DB

Question

Hi,
I want to write the image in the clipboard to the Blob am using JDeveloper. Can any1 help me please I am stuck on conversion and writing to Blob.
Very Urgent Please!!!!!!!
Comments: Applet is used to diplay an image present in the clipboard, convert this image into bytes write it to a blob and transfer the blob into Oracle DB
package mypackage1;
import java.applet.Applet;
import javax.swing.JLabel;
import oracle.jdeveloper.layout.XYLayout;
import oracle.jdeveloper.layout.XYConstraints;
import java.awt.datatransfer.*;
import java.awt.image.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.event.*;
import java.io.*;
import java.awt.*;
import javax.swing.*;
import oracle.jdeveloper.layout.OverlayLayout2;
import java.awt.Button;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.sql.Blob;
import java.sql.Statement;
import java.awt.Toolkit;
import java.awt.event.*; //Clipboard
import java.awt.datatransfer.*; //Clipboard
import java.awt.Image;// .image.*; //Clipboard
import java.sql.*;
import java.sql.*;
import java.net.*;
import java.lang.*;
import java.awt.TextField;
import java.awt.Font;
import oracle.sql.BLOB;
public class ClipboardImage extends Applet
Button displayButton = new Button();
Button exitButton = new Button();
JLabel photoLabel = new JLabel();
Panel panel1 = new Panel();
XYLayout xYLayout2 = new XYLayout();
XYLayout xYLayout1 = new XYLayout();
Button submitButton = new Button();
Connection connection = null;
static Image photo;
public byte[] data;
public Blob bl;
TextField Message = new TextField();
public ClipboardImage()
public void init()
try
jbInit();
catch(Exception e)
e.printStackTrace();
public static void main(String[] args)
ClipboardImage applet = new ClipboardImage();
Frame frame = new Frame();
frame.addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
frame.add(applet, BorderLayout.CENTER);
frame.setTitle("Applet Frame");
applet.init();
applet.start();
frame.setSize(300, 300);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = frame.getSize();
frame.setLocation((d.width - frameSize.width) / 2, (d.height -
frameSize.height) / 2);
frame.setVisible(true);
private void jbInit() throws Exception
this.setLayout(xYLayout2);
this.setBackground(new Color(136, 212, 122));
displayButton.setLabel("Display");
displayButton.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent e)
scanButton_actionPerformed(e);
exitButton.setLabel("Exit");
exitButton.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent e)
exitButton_actionPerformed(e);
photoLabel.setText("Photo");
panel1.setLayout(xYLayout1);
panel1.setBackground(new Color(255, 249, 240));
xYLayout2.setWidth(288);
xYLayout2.setHeight(300);
submitButton.setLabel("Submit");
submitButton.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent e)
submitButton_actionPerformed(e);
Message.setFont(new Font("Abadi MT Condensed", 0, 9));
panel1.add(photoLabel, new XYConstraints(0, 0, 115, 155));
this.add(Message, new XYConstraints(20, 275, 250, 15));
this.add(submitButton, new XYConstraints(105, 220, 80, 30));
this.add(panel1, new XYConstraints(90, 25, 115, 155));
this.add(exitButton, new XYConstraints(195, 220, 85, 30));
this.add(displayButton, new XYConstraints(10, 220, 85, 30));
void exitButton_actionPerformed(ActionEvent e)
System.exit(0);
If an image is on the system clipboard, this method returns it
otherwise it returns null
public static Image getClipboard()
Transferable t =
Toolkit.getDefaultToolkit().getSystemClipboard().getContents(null);
try
if (t != null && t.isDataFlavorSupported(DataFlavor.imageFlavor))
Image text = (Image)t.getTransferData(DataFlavor.imageFlavor);
photo = text;
return text;
catch (UnsupportedFlavorException e)
catch (IOException e)
return null;
Display an image in the system's clipboard
void scanButton_actionPerformed(ActionEvent e)
Image img = this.getClipboard();
photo = img;
photoLabel.setIcon(new ImageIcon(photo));
// Gives out int array
public int[] fetchPixels(Image image, int width, int height)
int pixMap[] = new int[width*height];
PixelGrabber pg = new PixelGrabber(image, 0,0,width,height, pixMap,
0, width);
try
pg.grabPixels();
catch (InterruptedException e)
return null;
if((pg.status() & ImageObserver.ABORT)!=0)
return null;
return pixMap;
// Here int array given by Pixel Grabber function is converted into
byte array
public byte[] extractData(int[] pixmap, int numbands) {
byte data[] = new byte[pixmap.length*numbands];
for(int i=0;i<pixmap.length;i++){
int pixel = pixmap;
byte a = (byte)((pixel >> 24) & 0xff);
byte r = (byte)((pixel >> 16) & 0xff);
byte g = (byte)((pixel >> 8) & 0xff);
byte b = (byte)((pixel ) & 0xff);
if(numbands == 4){
data[i*numbands+0] = r;
data[i*numbands+1] = g;
data[i*numbands+2]= b;
data[i*numbands+3] = a;
} else {
data[i*numbands+0] = r;
data[i*numbands+1] = g;
data[i*numbands+2]= b;
return data;
public void processData() {
Image awtImage = getClipboard();
int imageWidth = awtImage.getWidth(this);
int imageHeight = awtImage.getHeight(this);
int[] pix = fetchPixels(awtImage, imageWidth, imageHeight);
data = extractData(pix, 4);
photo = awtImage;
System.out.println(" Height = " + imageHeight + " Width = " +
imageWidth + " Pixel = " + pix + " Byte = " + data);
void submitButton_actionPerformed(ActionEvent e)
processData();
try {
System.out.println("Executing code");
// Load the JDBC driver
String driverName = "oracle.jdbc.driver.OracleDriver";
Class.forName(driverName);
// Create a connection to the database
String serverName = "10.20.90.101";
String portNumber = "1521";
String sid = "iasdb";
String url = "jdbc:oracle:thin:@" + serverName + ":" +
portNumber + ":" + sid;
String username = "birmingham";
String password = "in";
connection = DriverManager.getConnection(url, username,
password);
PreparedStatement ast = connection.prepareStatement("INSERT
INTO PASSPORT (PASSID, PHOTO) VALUES (1992, EMPTY_BLOB())");
ast.executeUpdate();
PreparedStatement pst = connection.prepareStatement("UPDATE
PASSPORT SET PHOTO = ? WHERE PASSID = 1992");
//pst.setObject(1, (Object)photo);
//Writing bytes to blob bl
bl.setBytes(0, data);
//Setting the blob to transfer to the blob column in oracle
db
pst.setBlob(1, bl);
pst.executeUpdate(); if(pst.EXECUTE_FAILED == 1)
Message.setText("Sql failed!");
}else{
Message.setText("Sql success!");
System.out.println ("Connected\n");
} catch (ClassNotFoundException ea) {
// Could not find the database driver
} catch (SQLException ea) {
System.out.println(ea.toString());

Answer 1

Look at the ArrayListTransferHandler class in the following Drag List Demo example: http://www.java2s.com/Code/Java/Swing-JFC/DragListDemo.htm