how to draw triangle in java

1public static void main(String[] args) {
2/*
3         *
4         * *
5         * * *
6         * * * *
7         * * * * *
8         * * * * * *
9         * * * * * * *   */
10
11     int z = 1;
12     while (z<=7){ // z value repeat
13
14         int i = 1;
15         while (i <= z){
16             System.out.print("* ");
17             i++;
18         }
19             System.out.println();
20             z++;
21     }
22        System.out.println("==============");
23
24        int z2 = 7;
25        while (z2 >= 1){ // z value repeat
26
27            int i2 = 1;
28            while (i2 <= z2){
29                System.out.print("* ");
30                i2++;
31            }
32
33            System.out.println();
34            z2--;
35        }
36

1graphics.drawPolygon(new int[] {10, 20, 30}, new int[] {100, 20, 100}, 3);
2// Graphics.drawPolygon(x-coordinates, y-coordinates, # of points);