Variasi Bintang - 5

import javax.swing.*;

public class bintang5 {

    public static void main(String[]args) {

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

        for(int i=1;i<=angka;i++) {

            for(int j=1;j<=i;j++) {

                System.out.print("*");

            }

            System.out.println();

        }

        for(int i=angka-1;i>=1;i--) {

            for(int j=1;j<=i;j++) {

                    System.out.print("*");

            }

            System.out.println();

        }

    }

}

 

Hasilnya :

*

**

***

****

*****

****

***

**

*