equilateral triangular using loop

Triangular.java

import java.util.ArrayList;

public class Triangular {

	public static int triangular(int totalDot) {
		System.out.print("\n");
		for (int i = 0; i < totalDot; i++) {
			
			for (int j = 1; j <= totalDot - i; j++) {
				System.out.print("*");
			}
			
			System.out.println();
		}
		System.out.print("\n");
        }

	public static void main(String[] args) {
		Loop.triangular(1);
		Loop.triangular(2);
		Loop.triangular(3);
		Loop.triangular(4);
	}

}

/**

Triangular numbers are so called because of the equilateral triangular shape that they occupy when laid out as dots. e.g.

triangle(1)
* 
=> 1

triangle(2)
**
*
=> 3

triangle(3)
***
**
*
=> 6

Write a function `triangle` that prints the triangle and returns the triangular number -- number of *'s printed.  It should return 0 for out of range values, but you will always be passed an integer.


*/

equilateral triangular using loop: i spent 98.58 minute for pieces of codes, shame on me, - mediocre programmer