原文链接 https://bigosg.github.io/java/2015/01/20/ascii-art-java-example.html
注：以下为加速网络访问所做的原文缓存，经过重新格式化，可能存在格式方面的问题，或偶有遗漏信息，请以原文为准。
这是一个有趣的java列子，先来看下效果吧：
{% highlight java %}
$$$$$$$ $$$$
$$$$$$$$$$ $$$$
$$$$$$$$$$$$ $$$$
$$$$$ $$$$$ $$$$
$$$$$ $$$$$ $$$$ $$ $$
$$$$$ $$$$$ $$$$ $$$$$$$$ $$$$$$$$$$$
$$$$$ $$$$$ $$$$ $$$$$$$$$$ $$$$$$$$$$$$
$$$$$ $$$$$ $$$$ $$$$$$$$$$$ $$$$$$$$$$$$$
$$$$$$ $$$$$$ $$$$ $$$$$ $$$$$ $$$$$ $$$$$
$$$$$$$$$$$$$ $$$$ $$$$ $$$$ $$$$$ $$$$
$$$$$$$$$$$$$ $$$$ $$$$$$$$$$$$ $$$$ $$$$
$$$$$$$$$$$ $$$$ $$$$$$$$$$$$ $$$$ $$$$
$$$$$ $$$$ $$$$$$$$$$$$ $$$$ $$$$
$$$$ $$$$ $$$$$ $$$$$ $$$$$
$$$$$ $$$$ $$$$$ $$$$$$ $$$$$$
$$$ $$$$$$ $$$$ $$$$$$$$$$$$ $$$$$$$$$$$$$
$$$$$$$$$$$ $$$$ $$$$$$$$$$$ $$$$$$$$$$$$
$$$$$$$$$ $$$$ $$$$$$$$$$ $$$$$$ $$$$
$$$$$$ $$$$ $$$$$
$$ $$$$$$
$$$$$$$$$$$
$$$$$$$$$$$
$$$$$$$$$
{% endhighlight %}
实现代码如下：
{% highlight java %} public class ASCIIArt {
public static void main(String[] args) throws IOException {
int width = 100;
int height = 30;
//BufferedImage image = ImageIO.read(new File("/users/zhujiajun/ascii-art.png"));
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();
g.setFont(new Font("SansSerif", Font.BOLD, 24));
Graphics2D graphics = (Graphics2D) g;
graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
graphics.drawString("9leg", 10, 20);
//save this image
//ImageIO.write(image, "png", new File("/users/zhujiajun/ascii-art.png"));
for (int y = 0; y < height; y++) {
StringBuilder sb = new StringBuilder();
for (int x = 0; x < width; x++) {
sb.append(image.getRGB(x, y) == -16777216 ? " " : "$");
}
if (sb.toString().trim().isEmpty()) {
continue;
}
System.out.println(sb);
}
}
}
{% endhighlight %}
-16777216这是什么玩意？ 其实是颜色代码（256 * 256 * 256），在这个列子中"-16777216"被替换为空的字符串“ ”。可以读取保存的图片，并且打印出rgb color，会发现不同的颜色会有不同的代码。
英文原文链接{:target="_blank"}