模擬地圖撒點,將隨機產生的一些點以圓的形式畫在畫布上並保存爲png格式的圖片
package com;
import java.awt.Color;
public class testGI {
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
paintImage();
}
protected static void paintImage() throws IOException {
BufferedImage image = null;
File file = new File("c:\\output\\01.png");
if (file.exists()) {
image = ImageIO.read(file);
} else {
image = new BufferedImage(10000, 10000, BufferedImage.TYPE_INT_ARGB);
}
Graphics g = image.getGraphics();
g.setColor(Color.red);
Random rand = new Random();
for (int i = 0; i < 10000; i++) {
int x=rand.nextInt(10000);
int y=rand.nextInt(10000);
g.drawOval(x, y, 10, 10);
}
FileOutputStream out = new FileOutputStream("c:\\output\\01.png");
ImageIO.write(image, "png", out);
g.dispose();
out.close();
}
}
import java.awt.Color;
public class testGI {
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
paintImage();
}
protected static void paintImage() throws IOException {
BufferedImage image = null;
File file = new File("c:\\output\\01.png");
if (file.exists()) {
image = ImageIO.read(file);
} else {
image = new BufferedImage(10000, 10000, BufferedImage.TYPE_INT_ARGB);
}
Graphics g = image.getGraphics();
g.setColor(Color.red);
Random rand = new Random();
for (int i = 0; i < 10000; i++) {
int x=rand.nextInt(10000);
int y=rand.nextInt(10000);
g.drawOval(x, y, 10, 10);
}
FileOutputStream out = new FileOutputStream("c:\\output\\01.png");
ImageIO.write(image, "png", out);
g.dispose();
out.close();
}
}
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