打印三角形

package struct;

public class breakdome {
public static void main(String[] args) {
for (int i=1; i <= 5; i++) {
for (int j = 5; j >= i; j-- ){
System.out.print(" ");

        }
        for (int j = 1; j <=i; j++){
            System.out.print(".");

        }
        for (int j = 1; j<i; j++){
            System.out.print(".");

        }
        System.out.print("\n");

    }
    System.out.println( );
}

}
/*

• .
  ...
  .....
  .......
  .........
  */