With this tutorial we shall show you how to create an image file from graphics object. This is particularly useful when you want to create your own images out of custom made graphics.

Creating an image file from graphics object requires that you:

• Create a newBufferedImage.
• Create aGraphics2D usingcreateGraphics.
• Create anew File("myimage.png").
• UseImageIO.write(bufferedImage, "jpg", file) to create the image.

 
Let’s see the code:

package com.javacodegeeks.snippets.desktop;import java.awt.Color;import java.awt.Graphics2D;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import javax.imageio.ImageIO;public class CreateImageFileFromGraphicsObject {public static void main(String[] args) throws IOException {int width = 250;    int height = 250;    // Constructs a BufferedImage of one of the predefined image types.    BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);    // Create a graphics which can be used to draw into the buffered image    Graphics2D g2d = bufferedImage.createGraphics();    // fill all the image with white    g2d.setColor(Color.white);    g2d.fillRect(0, 0, width, height);    // create a circle with black    g2d.setColor(Color.black);    g2d.fillOval(0, 0, width, height);    // create a string with yellow    g2d.setColor(Color.yellow);    g2d.drawString("Java Code Geeks", 50, 120);    // Disposes of this graphics context and releases any system resources that it is using.     g2d.dispose();    // Save as PNG    File file = new File("myimage.png");    ImageIO.write(bufferedImage, "png", file);    // Save as JPEG    file = new File("myimage.jpg");    ImageIO.write(bufferedImage, "jpg", file);}}

 
This was an example on how to create image file from graphics object.

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