ImageIO.write - TIF and BMP - Zero bytes

[ramesh agarwal]

I executed the code below from:

import java.io.*;
import java.awt.*;
import java.awt.image.*;
import javax.imageio.ImageIO;

public class GenerateImageType {
  static public void main(String args[]) throws Exception {
      int width = 200, height = 180;
      BufferedImage bufferedImage = new BufferedImage(width, height,
               BufferedImage.TYPE_INT_ARGB);
      Graphics2D g2d = bufferedImage.createGraphics();
    
    Font font = new Font("Arial", Font.BOLD, 24);
      g2d.setFont(font);
      String text = "Welcome!";
      FontMetrics fontMetrics = g2d.getFontMetrics();
      int stringWidth = fontMetrics.stringWidth(text);
      int stringHeight = fontMetrics.getAscent();
      g2d.setPaint(Color.black);
      g2d.drawString(text, (width - stringWidth) / 2, height / 2 + 
              stringHeight / 4);
      
    ImageIO.write(bufferedImage, "gif", new File("C:\\image.GIF"));
      ImageIO.write(bufferedImage, "JPEG", new File("C:\\image.JPG"));
      ImageIO.write(bufferedImage, "PNG", new File("C:\\image.PNG"));
      ImageIO.write(bufferedImage, "BMP", new File("C:\\image.BMP"));
      ImageIO.write(bufferedImage, "TIF", new File("C:\\image.TIF"));
   }
}

The generated files are ok except for BMP and TIF are zero bytes each.

What could be the problem? I am using JDK 1.6.0

[Rob Spoor]

TIF is quite logical, that's not supported by default (check ImageIO.getWriterFormatNames()). BMP is though, at least on my machine.

I've even tried the following:

for (String format: ImageIO.getWriterFormatNames())
{
    ImageIO.write(bufferedImage, format, new File("C:\\image_new." + format));
}

Yet somehow, even though they are supported, BMP and WBMP give empty files. Odd indeed.

[Ulf Dittmer]

Interesting. I'm getting zero-length BMP/WBMP in Java 5 on OS X as well. I was in the past successful in generating BMPs using ImageIO, though.

Info on how to TIFF-enable ImageIO

[Craig Wood]

See Converting Images to BMP/WMBP for some subtleties.