Java- Write Text onto Image, then Write to Output File

Question

I have an image on top of which I would like to write text that has multiple lines, is center-aligned, and dynamic (variable width). I\'ve tried using the drawString

Answer 1

You don't really need swing at all if you just want to generate image files.

You can do something like this:

import java.awt.image.BufferedImage;
import java.awt.Graphics2D;
import java.io.File;
import javax.imageio.ImageIO;
import java.io.IOException;

BufferedImage img = ImageIO.read(new File("dog.jpg")); // try/catch IOException
int width = img.getWidth();
int height = img.getHeight();

BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = bufferedImage.createGraphics();

// draw graphics
g2d.drawImage(img, 0, 0, null);
g2d.drawString(text, x, y);

g2d.dispose();

try {

// Save as PNG
File file = new File("newimage.png");
ImageIO.write(bufferedImage, "png", file);

// Save as JPEG
file = new File("newimage.jpg");
ImageIO.write(bufferedImage, "jpg", file);

} catch (IOException e) { }

For more info, see:

http://www.exampledepot.com/egs/javax.imageio/Graphic2File.html

The text alignment and centering can be done using the FontMetrics class.