Variasi Bintang - 4

import javax.swing.*;

public class bintang4 {

    public static void main (String[]args) {

    int angka=Integer.valueOf(JOptionPane.showInputDialog("Masukkan Angka"));

        for (int i=angka;i>=1;i--) {

            for (int j=i;j<angka;j++) {

                System.out.print(" ");

            }

            for (int k=1;k<i+1;k++) {

                System.out.print("*");

            }

            System.out.println();

        }

    }

}

 

Hasilnya : 

*****

 ****

  ***

   **

    *