How to add text to an image in java?

Question

I need to add some texts to an existing table image (png). Which means that I need to "write" on the image and I need the option to select the text location. How can I do it?

What are you using to represent the image? Do you already have the image in some format in java or do you want to write a whole java program that gets an image and returns that image with the text written on it from scratch? — Benjamin Gruenbaum
– Benjamin Gruenbaum, Commented Jun 7, 2012 at 9:56

dacwe · Accepted Answer · 2012-06-07 09:57:44Z

131

It's easy, just get the Graphics object from the image and draw your string onto the image. This example (and output image) is doing that:

public static void main(String[] args) throws Exception {
    final BufferedImage image = ImageIO.read(new URL(
        "http://upload.wikimedia.org/wikipedia/en/2/24/Lenna.png"));

    Graphics g = image.getGraphics();
    g.setFont(g.getFont().deriveFont(30f));
    g.drawString("Hello World!", 100, 100);
    g.dispose();

    ImageIO.write(image, "png", new File("test.png"));
}

Output (test.png):

output

answered Jun 7, 2012 at 9:57

dacwe

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8 Comments

Andrew Thompson Over a year ago

See also this example using GlyphVector for other interesting text/image combinations.

whiteberryapps Over a year ago

How do I save the image on my computer?

dacwe Over a year ago

It's already in the code above. Use ImageIO.write(image, "png", new File("test.png")); It will write the file (test.png) to the current directory.

stacky Over a year ago

Thanks this worked great, how can we change the text color using hex code and font to arial??

Baruch Atta Over a year ago

Stacky: to change text attributes, see docs.oracle.com/javase/8/docs/api/java/awt/Graphics.html and also this: docs.oracle.com/javase/8/docs/api/java/awt/font/…

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