How to fill color on triangle?

Question

I draw a triangle using line. How can I fill color on it? So far I can only color the line but not fill the color. public void paintComponent(Graphics g){ super.paintComponents(g); int k=0; for (j=0 ; j < numOfLines; j++){ // the values of numOfLines retrieved from other method. g.setColor(Color.green); g.drawLine(x[k], x[k+1], x[k+2], x[k+3]); k = k+4; //index files } }

Answer 1

If you make a polygon from the vertices, you can use the fillPolygon() function to set the color of the triangle.

To make the triangle, make two arrays to hold the coordinates for each vertex of the triangle.

Ex:

xPts[0] = 1; xPts[1] = 2; xPts[2] = 3;

yPts[0] = 1; yPts[1] = 2; yPts[2] = 1;

Then make a polygon using these coordinates and use fillPolygon().

n = 3; //# of sides in the polygon

Polygon p = new Polygon(xPts, yPts, n);

g.fillPolygon(p);