Image resizing using imgscalr API in java

Question

How to convert Buffered image into a file object. My function actually needs to return a file object . The imgscalr resizing function returns a BufferedImage after resizing.so How to convert it into a file object.

Answer 1

Here is an example of writing to a PNG file:

ImageIO.write(yourImage, "PNG", "yourfile.png");

You must import ImageIO (javax.imageio) first, however.

Then you can get the File object for the image with new File("yourfile.png");.

You could put this in a function for ease of use; here is an example:

public File imageToFile(BufferedImage img, String fileName) {
    if (!(fileName.endsWith(".png"))) fileName += ".png";
    ImageIO.write(img, "PNG", filename);
    return new File(fileName);
}

Here is a link to the docs.

You cannot make a file object without saving... well, a file. You could put it in a temporary directory and delete it when you are done using it, though.