pyrimid.java

public class pyrimid {

    public static void main(String[] args) {
        int n = 4;
        for (int i = n ; i >= 0 ; i--) {
            for (int j = 0; j < n-i-1; j++) {
                System.out.print(" ");
            }

            for (int j = 0; j < 2*i+1; j++) {
                System.out.print("*");
            }

            System.out.println();
        }
    }
}