Contoh Program Java:Looping atau Pengulangan

1.Soal Pertama
Script :
import javax.swing.*;
public class tugas_bintang {
    public static void main (String[] args){
        int x;
x=Integer.valueOf(JOptionPane.showInputDialog("Masukan banyak bintang ?"));
        for (int i=1;i<=x;i++){
            for (int j=1;j<=x;j++){
                if(j<=i)
                System.out.print("*");
                else
                System.out.print(" ");
            }
            System.out.println();
        }
    }

}
Ountput :