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For an applet I'm working on I need to convert a BufferedImage file to an input stream so that I can upload the image to my MySQL server. Originally I was using this code: Class.forName("com.mysql.jdbc.Driver").newInstance(); Connection connection = DriverManager.getConnection(connectionURL, "user", "pass"); psmnt = connection.prepareStatement( "insert into save_image(user, image) values(?,?)"); psmnt.setString(1, username); ImageIO.write(image, "png", new File("C://image.png")); File imageFile = new File("C://image.png"); FileInputStream fis = new FileInputStream(imageFile); psmnt.setBinaryStream(2, (InputStream)fis, (fis.length())); int s = psmnt.executeUpdate(); if(s > 0) { System.out.println("done"); } (while catching the relevant exceptions) The code hangs on the part where the applet attempts to save the image to the computer. The code worked perfectly in Eclipse or whenever I ran the applet from the localhost, so I'm assuming the problem is in the privileges that the applet has in saving files to the user's computer. I was just was wondering if there was a way to turn the image file into an inputstream without having to save a file to the user's computer. I tried using: ImageIO.createImageInputStream(image); But then I couldn't convert the ImageInputStream back to an InputStream . Any Suggestions? Thanks!

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