The fillPolygon() method fills the given polygon. The Graphics class provides this method in the awt package.
It fills the polygon with present graphics context colour.
graphics.fillPolygon(xPoints,yPoints,nPoints)
It fills the polygon for the given array of x and y coordinates.
Let’s take a look at an example:
//import required packages
import java.awt.Graphics;
import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main extends JPanel {
public void paint(Graphics g) {
//set graphics context color
g.setColor(Color.red);
int xpoints[] = {25, 145, 25, 145, 25};
int ypoints[] = {25, 25, 145, 145, 25};
int npoints = 5;
//fill the polygon
g.fillPolygon(xpoints, ypoints, npoints);
}
//main method
public static void main(String[] args) {
//Instantiate JFrame
JFrame frame = new JFrame();
//add panel
frame.getContentPane().add(new Main());
//Will exit the program when you close the gui
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//set width and height of the frame
frame.setSize(200,200);
//set visibility of the frame
frame.setVisible(true);
}
}In the code above:
red.fillPolygon() method, it fills with current graphics context color.