我需要从一个格式如下的文件在java中画线:
5 //Number of lines of points
10 10
23 56
15 34
32 67
76 45
我想我将不得不设置两个数组,然后以某种方式添加这样的值,但我完全迷失了,真的需要一些指导。任何帮助,将不胜感激!下面的代码是画线需要修改的。现在它只是绘制点。
代码:
import javax.swing.*;
import java.awt.*;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
public class Test {
private static final String FILE = "Desktop/Assign2Test1.txt";
private static Point[] points;
public static void main(final String[] args){
try{
final BufferedReader br = new BufferedReader(new FileReader(new File(FILE)));
points = new Point[Integer.parseInt(br.readLine())];
int i = 0;
int xMax = 0;
int yMax = 0;
while(br.ready()){
final String[] split = br.readLine().split("\t");
final int x = Integer.parseInt(split[0]);
final int y = Integer.parseInt(split[1]);
xMax = Math.max(x, xMax);
yMax = Math.max(y, yMax);
points[i++] = new Point(x, y);
}
final JFrame frame = new JFrame("Point Data Rendering");
final Panel panel = new Panel();
panel.setPreferredSize(new Dimension(xMax + 10, yMax + 10));
frame.setContentPane(panel);
frame.pack();
frame.setVisible(true);
frame.repaint();
} catch (final Exception e){
e.printStackTrace();
}
}
public static class Panel extends JPanel {
@Override
public void paintComponent(final Graphics g){
g.setColor(Color.RED);
for(final Point p : points){
g.fillRect((int) p.getX(), (int) p.getY(), 2, 2);
}
}
}
}