package test;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;

import javax.imageio.ImageIO;

public class DrawGraphics {

/**
* @param args
*/
public static void main(String[] args) throws Exception{
int width=800;
int height=800;
File file = new File("e:\a.jpg");
BufferedImage bi = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);//RGB形式
Graphics2D g2 = (Graphics2D) bi.getGraphics();
g2.setBackground(Color.WHITE);//设置背景色
g2.clearRect(0, 0, width, height);//通过使用当前绘图表面的背景色进行填充来清除指定的矩形。
g2.setPaint(Color.BLUE);//设置画笔,设置Paint属性
g2.drawOval(0, 0, 80, 80);
ImageIO.write(bi, "jpeg", file);
g2.dispose();
System.out.println("test");