Someone

import javax.swing.JOptionPane;
public class Exerc221 {
        

    public static void main(String[] args) {
       String temp="", a, b, c, d, e, f, g, h, i;
       
     a=  ("  *********        ***            *          *       \n");
     b=  ("  *       *     *       *        ***        *  *     \n");
     c=  ("  *       *   *           *     *****      *    *    \n");
     d=  ("  *       *   *           *       *       *      *   \n");
     e=  ("  *       *   *           *       *      *        *  \n");
     f=  ("  *       *   *           *       *       *      *   \n");
     g=  ("  *       *   *           *       *        *    *    \n");
     h=  ("  *       *     *       *         *         *  *     \n");
     i=  ("  *********        ***            *          *       \n");
     temp = a + b + c + d + e + f + g + h + i;
    JOptionPane.showMessageDialog(null,temp,"Exercício 2.20",JOptionPane.PLAIN_MESSAGE);
    
    }
}