package test;

import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;

public class Test {
    public static void test() {
        BufferedImage image = new BufferedImage(78,20,BufferedImage.TYPE_INT_RGB);
        Graphics2D g = image.createGraphics();
        g.setFont(new Font("宋体", Font.PLAIN, 16));
        g.drawString("我是白痴", 2, image.getHeight() - 2);
        int[] p = image.getRGB(0,0,image.getWidth(),image.getHeight(),new int[image.getWidth()*image.getHeight()],0,image.getWidth());
        for(int i=0;i<image.getHeight();i++)
          for(int j=0;j<image.getWidth();j++)
            System.out.print(p[i*image.getWidth()+j]==-1?(i%2==0?"*":"*"):" "+(j==image.getWidth()-1?"\n":""));
      }

    public static void main(String args[]) {
        test();
    }
}

参考： 用图形符号“*”组合拼出？-CSDN论坛  http://bbs.csdn.net/topics/210039216