Saving a dynamically created Image to a File.

Question

I have an image, I read the image, add a few things to image (like some text etc).

All this I do inside a JPanel .

Now, I want to save the resulting image to a .png file .

I think, there is a way to do this for a buffered image using ImageIO.write()

But I cannot convert the dynamically created image to a BufferedImage.

Is there a way I can go about this ?

Answer 1

You can use the Screen Image class.

It will create a BufferedImage of your JPanel. The class also has code to write the image to a file.

Answer 2

All this I do inside a JPanel .

Do it instead in another BufferedImage displayed in a JLabel . The code can get a Graphics2D object using BufferedImage.createGraphics() method. Paint the image and text to the new Graphics2D instance and you then the new image can be saved directly, along with changes.

Answer 3

Use Following method it worked for me...

void TakeSnapShot(JPanel panel,String Locatefile){  
           BufferedImage bi = new BufferedImage(panel.getSize().width,  panel.getSize().height,BufferedImage.TYPE_INT_RGB);  

           panel.paint(bi.createGraphics()); 

           File image = new File(Locatefile);  
        try{  
            image.createNewFile();  
            ImageIO.write(bi, "png", image);
        }catch(Exception ex){  
        }  
    }