Membuat Program Segitiga Pascal Java Netbeans

package segitigapascal;

public class Main {

 public static void main(String[] args) {

        int n = 5, j,k;

        String tampil = "";

        for (int i=1; i<=n; i++){

            for(j=n; j>i; j--){

                tampil += " ";

            }

            for(k=1; k<=i; k++){

                tampil += "1  ";

            }

            tampil += "\n";

        }

        System.out.print(tampil);

            }

        }