Java tutorial
import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.awt.FontMetrics; import java.awt.GradientPaint; import java.awt.Graphics2D; import java.awt.geom.Ellipse2D; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; public class WriteImageType { static public void main(String args[]) throws Exception { try { int width = 200, height = 200; // TYPE_INT_ARGB specifies the image format: 8-bit RGBA packed // into integer pixels BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); Graphics2D ig2 = bi.createGraphics(); Font font = new Font("TimesRoman", Font.BOLD, 20); ig2.setFont(font); String message = "www.java2s.com!"; FontMetrics fontMetrics = ig2.getFontMetrics(); int stringWidth = fontMetrics.stringWidth(message); int stringHeight = fontMetrics.getAscent(); ig2.setPaint(Color.black); ig2.drawString(message, (width - stringWidth) / 2, height / 2 + stringHeight / 4); ImageIO.write(bi, "PNG", new File("c:\\yourImageName.PNG")); ImageIO.write(bi, "JPEG", new File("c:\\yourImageName.JPG")); ImageIO.write(bi, "gif", new File("c:\\yourImageName.GIF")); ImageIO.write(bi, "BMP", new File("c:\\yourImageName.BMP")); } catch (IOException ie) { ie.printStackTrace(); } } }