Java tutorial
import java.awt.Color; import java.awt.Container; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Rectangle; import java.awt.RenderingHints; import java.awt.TexturePaint; import java.awt.image.BufferedImage; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass { public static void main(String[] args) { JFrame jf = new JFrame("Demo"); Container cp = jf.getContentPane(); MyCanvas tl = new MyCanvas(); cp.add(tl); jf.setSize(300, 200); jf.setVisible(true); } } class MyCanvas extends JComponent { public void paint(Graphics g) { BufferedImage bim; TexturePaint tp; String mesg = "www.java2s.com"; Font myFont = new Font("Lucida Regular", Font.BOLD, 72); Color[] colors = { Color.red, Color.blue, Color.yellow, }; int width = 8, height = 8; bim = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); Graphics2D g2 = bim.createGraphics(); for (int i = 0; i < width; i++) { g2.setPaint(colors[(i / 2) % colors.length]); g2.drawLine(0, i, i, 0); g2.drawLine(width - i, height, width, height - i); } Rectangle r = new Rectangle(0, 0, bim.getWidth(), bim.getHeight()); tp = new TexturePaint(bim, r); Graphics2D g2d = (Graphics2D) g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2d.setPaint(tp); g2d.setFont(myFont); g2d.drawString(mesg, 20, 100); } }