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converting to BMP, GIF, JPEG?

Hello everybody!!!I would like to know where can I get code to convert a Image data to different formats? thank you.
[144 byte] By [fidalgoa] at [2007-9-26 2:07:29]
«« sending file throught socket
»» why "JRun Closed Connection"
# 1

Take a look to these two optional packages:

- Java Adavanced Imaging (http://java.sun.com/products/java-media/jai/index.html)

- Image I/O (http://developer.java.sun.com/developer/earlyAccess/imageio/)

The former comes with more image formats, but the latter is easier to use and, most important, is included in JDK 1.4.

fabiocar at 2007-6-29 8:54:51 > top of Java-index,Security,Cryptography...
# 2

Look at this example with ImageIO, it saves the content of a JFrame into a file:

import java.awt.*;

import java.awt.image.*;

import java.io.*;

import javax.imageio.*;

import javax.swing.*;

public class SaveSwing

{

public static void main(String[] args)

{

JFrame jframe = new JFrame("Hello there!");

jframe.setBounds(100, 100, 300, 200);

Container cp = jframe.getContentPane();

cp.add(new JLabel("Can you save me?"));

jframe.show();

BufferedImage image = new BufferedImage(cp.getWidth(), cp.getHeight(),

BufferedImage.TYPE_3BYTE_BGR);

cp.paint(image.getGraphics());

try { ImageIO.write(image, "png", new File("jframe.png")); }

catch(Throwable thr) { thr.printStackTrace(); }

System.exit(0);

}

}

fabiocar at 2007-6-29 8:54:51 > top of Java-index,Security,Cryptography...
# 3

I compiled your example but I get this error when I try to run it:

java.lang.IllegalArgumentException: raster == null!

at javax.imageio.IIOImage.<init>(IIOImage.java:94)

at javax.imageio.ImageWriter.write(ImageWriter.java:567)

at javax.imageio.ImageIO.write(ImageIO.java:1182)

at javax.imageio.ImageIO.write(ImageIO.java:1213)

at gimagez.SaveAWT.main(SaveAWT.java:3)

What am I doing wrong?

goldizzy at 2007-6-29 8:54:51 > top of Java-index,Security,Cryptography...
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