Touching triangle in java

TouchingTriangle.java

public class TouchingTriangle {
    public static void main(String[] args) {
        touchingTriangle();
    }

    private static void touchingTriangle() {
        int r = 10;
        int qty = 10;
        for (int iu = 1, id = r; iu <= r; ++iu, --id) {

            // up
            for (int su = 1; su <= r - iu; ++su) {
                System.out.print("  ");
            }
            for (int i = 1; i <= qty; i++) {
                if (i % 2 != 0) {

                    exact_up(r, iu, i);
                } else {
                    excat_down(r, id);

                }
            }
            System.out.println();
        }
    }

    private static void excat_down(int r, int id) {
        for (int cd = 0; cd < 2 * id - 1; cd++) {
            if (id != r) {
                if (cd == 2 * id - 2) {
                    System.out.print("* ");
                } else {
                    System.out.print("  ");
                }
            } else {
                System.out.print("* ");
            }
        }
    }

    private static void exact_up(int r, int iu, int qty) {
        for (int cu = 0; cu < 2 * iu - 1; cu++) {
            if (iu != r) {
                if ((qty == 1 && cu == 0) || cu == 2 * iu - 2) {
                    System.out.print("* ");
                } else {
                    System.out.print("  ");
                }
            } else {
                System.out.print("* ");
            }
        }
    }
}