利用Java语言用Java小程序使用边界标志算法给一个顶点坐标为(52,20), (158,20), (195,130), (100,200), (5,130)的凸多边形填充为黑色，给出代码

好的，我可以为您提供相应的Java代码来实现这个任务。下面是用Java语言实现边界标志算法填充凸多边形为黑色的示例代码：

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Polygon;
import java.awt.Point;
import javax.swing.JFrame;
import javax.swing.JPanel;
 
public class FillPolygon extends JPanel {
    private static final long serialVersionUID = 1L;
    private Polygon polygon;
 
    public FillPolygon() {
        int[] x = new int[]{52, 158, 195, 100, 5};
        int[] y = new int[]{20, 20, 130, 200, 130};
        polygon = new Polygon(x, y, 5);
    }
 
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.setColor(Color.BLACK);
        fillPolygon(polygon, g);
    }
 
    private void fillPolygon(Polygon poly, Graphics g) {
        Point p;
        int yMax = poly.ypoints[0], yMin = poly.ypoints[0];
        for (int i = 1; i < poly.npoints; i++) {
            yMax = Math.max(yMax, poly.ypoints[i]);
            yMin = Math.min(yMin, poly.ypoints[i]);
        }
 
        for (int y = yMin; y <= yMax; y++) {
            int xLeft = 0, xRight = 0;
            boolean first = true;
            for (int i = 0; i < poly.npoints; i++) {
                int j = (i + 1) % poly.npoints;
                int[] xp = new int[]{poly.xpoints[i], poly.xpoints[j]};
                int[] yp = new int[]{poly.ypoints[i], poly.ypoints[j]};
 
                int dy = yp[1] - yp[0];
                if (dy == 0)
                    continue;
                if (y < Math.min(yp[0], yp[1]) || y > Math.max(yp[0], yp[1]))
                    continue;
 
                p = new Point();
                p.y = y;
                p.x = xp[0] + (y - yp[0]) * (xp[1] - xp[0]) / dy;
 
                if (first) {
                    xLeft = xRight = p.x;
                    first = false;
                } else {
                    if (p.x < xLeft)
                        xLeft = p.x;
                    if (p.x > xRight)
                        xRight = p.x;
                }
            }
            if (!first) {
                g.drawLine(xLeft, y, xRight, y);
            }
        }
    }
 
    public static void main(String[] args) {
        JFrame frame = new JFrame("FillPolygon Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new FillPolygon());
        frame.setSize(260, 240);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

这个程序创建了一个继承自JPanel的FillPolygon类，并在其paintComponent方法中调用了fillPolygon方法来填充多边形。在fillPolygon方法中，它使用了边界标志算法来填充多边形。在main方法中，程序创建了一个JFrame窗口并将FillPolygon实例添加到其中以便运行和测试。

希望这个Java示例代码能够帮助您完成您的任务。