thumnail creation
Hello Sir
I am using a java class to create the thumbnail image in my project.
Its creating but it doesn't show the image when i open it., only all black kind of image open up. My code is as shown below. Please give me some tips where i am wrong.
The code is as follows ::
import java.awt.Image;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.io.FileOutputStream;
import javax.swing.ImageIcon;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
class Thumbnail {
public static void main(String[] args) {
createThumbnail("C:\\Documents and Settings\\admin\\Desktop\\63708837RS870056789.jpeg", "C:\\Documents and Settings\\admin\\Desktop\\thumb.jpeg",400);
}
/**
* Reads an image in a file and creates
* a thumbnail in another file.
* @param orig The name of image file.
* @param thumb The name of thumbnail file.
* Will be created if necessary.
* @param maxDim The width and height of
* the thumbnail must
* be maxDim pixels or less.
*/
public static void createThumbnail(
String orig, String thumb, int maxDim) {
try {
// Get the image from a file.
Image inImage = new ImageIcon(
orig).getImage();
// Determine the scale.
double scale = (double)maxDim/(
double)inImage.getHeight(null);
if (inImage.getWidth(
null) > inImage.getHeight(null)) {
scale = (double)maxDim/(
double)inImage.getWidth(null);
}
// Determine size of new image.
//One of them
// should equal maxDim.
int scaledW = (int)(
scale*inImage.getWidth(null));
System.out.println("w="+scaledW);
int scaledH = (int)(
scale*inImage.getHeight(null));
System.out.println("h="+scaledH);
// Create an image buffer in
//which to paint on.
BufferedImage outImage =
new BufferedImage(scaledW, scaledH,
BufferedImage.TYPE_INT_RGB);
// Set the scale.
AffineTransform tx =
new AffineTransform();
// If the image is smaller than
//the desired image size,
// don't bother scaling.
if (scale < 1.0d) {
tx.scale(scale, scale);
}
// Paint image.
Graphics2D g2d =
outImage.createGraphics();
g2d.drawImage(inImage, tx, null);
g2d.dispose();
// JPEG-encode the image
//and write to file.
OutputStream os =
new FileOutputStream(thumb);
JPEGImageEncoder encoder =
JPEGCodec.createJPEGEncoder(os);
encoder.encode(outImage);
os.close();
} catch (IOException e) {
e.printStackTrace();
}
System.exit(0);
}
}
With Regards
