CODEWITHSUNDEEP
javaimageswing
user999465
user999465

Reputation:

ImageIO.write didn't work?

Hello I have problem with followed function that should save forwarded bufferedImage on disk. When I run this code there no exception throwed no problems, BufferedImage is transfered to ImageIO.write(img, ext ,fileToSave) file was created, ext is correct but there no image on my disk! After hours i dont have idea what can go wrong. Maybe permission? But i have it to read/write on disk.

  public boolean SaveImage(BufferedImage img)
{
    JFileChooser FC=new JFileChooser("C:/");
    FC.addChoosableFileFilter(new jpgSaveFilter());
    FC.addChoosableFileFilter(new jpegSaveFilter());
    FC.addChoosableFileFilter(new PngSaveFilter());
    FC.addChoosableFileFilter(new gifSaveFilter());
    FC.addChoosableFileFilter(new BMPSaveFilter());
    FC.addChoosableFileFilter(new wbmpSaveFilter()); 

    int retrival=FC.showSaveDialog(null);

    if (retrival == FC.APPROVE_OPTION) 
       {

            String ext="";

            String extension=FC.getFileFilter().getDescription();

           if(extension.equals("*.jpg,*.JPG"))
          { 
              ext=".jpg";
          }
          if(extension.equals("*.png,*.PNG"))
          { 
              ext=".png";
          }
          if(extension.equals("*.gif,*.GIF"))
          { 
              ext=".gif";
          }
          if(extension.equals("*.wbmp,*.WBMP"))
          { 
              ext=".wbmp";
          }
          if(extension.equals("*.jpeg,*.JPEG"))
          { 
              ext=".jpeg";
          }
          if(extension.equals("*.bmp,*.BMP"))
          { 
              ext=".bmp";
          }

          File fileToSave = FC.getSelectedFile();
          try{
              ImageIO.write(img, ext ,fileToSave);

          }
          catch (IOException e) {
                e.printStackTrace();
            }
          catch(Exception ex)
          {
              System.out.println(ex.getMessage());
              return false;
          }
          return true;
       }
    return false;
}

Thanks for help!

Upvotes: 2

Views: 3558

Answers (3)

Martijn Courteaux
Martijn Courteaux

Reputation: 68907

Extensions in ImageIO.write should be like "PNG", "JPG". without the point.

And the if (extension.equals("...")) approach is very bad. Make sure you actually provided an extension. IE: at least one of the if's succeeded. Try to print the ext just before writing, to check if it has a correct value.

System.out.println("Extension: " + ext);

Oh, and javax.imageio only supports PNG, JPG, JPEG (and GIF read-only). To get dynamically a list of supported formats, use:

ImageIO.getWriterFormatNames();

Upvotes: 2

marcin
marcin

Reputation: 11

mistake may be here: JFileChooser FC=new JFileChooser("C:/"); change the file path to "C:\" (or double backslash)

Upvotes: 0

MadProgrammer
MadProgrammer

Reputation: 347334

The problem is your specifying the file format as the ext

Effectively your saying

ImageIO.write(img, ".jpg" ,fileToSave)

You need to supply it so it evaluates to

ImageIO.write(img, "jpg" ,fileToSave)

Upvotes: 5

Related Questions