Java™ How To Program (Early Objects), Tenth Edition

Rounded Rectangles, BufferedImages and TexturePaint Objects

Next we draw a rounded rectangle filled with a pattern created in a BufferedImage (package java.awt.image) object. Lines 38–39 create the BufferedImage object. Class BufferedImage can be used to produce images in color and grayscale. This particular BufferedImage is 10 pixels wide and 10 pixels tall (as specified by the first two arguments of the constructor). The third argument BufferedImage.TYPE_INT_RGB indicates that the image is stored in color using the RGB color scheme.

To create the rounded rectangle’s fill pattern, we must first draw into the BufferedImage. Line 42 creates a Graphics2D object (by calling BufferedImage method createGraphics) that can be used to draw into the ...