Centered Alignment For Console

"Write a java application that displays the following patterns separately one below the other.

Use for loops to generate the patterns. There are 4 Triangle patterns.

All asterisks (*) should be printed by a single statement of the form System.out.print('*');

This is 4-different patterns, not 1-pattern."

The first 2 triangles are right angles and is simple to make with a loop with in a loop

The 3rd triangle is like an inverted christmas tree and the 4th one is a christmas tree. ( It's not showing properly on the board so i deleted it). I can't seem to make the 3rd and 4th triangle line up properly it looks like this (the _ represents blank spaces on the console)

_____*_____

_____**_____

____***_____

____****_____

___*****____

___******_____

__*******

__********____

Notice how the sides of the triangle isn't straight and the triangle looks like its dancing, the assignment requires it to be a straight line. is there anyway to do this? This is suppose to be the output. all the lines of the triangle is straight and not jagged ...

public class myclass {
public static void main(String[] args) {
int counter = 1;
int counter2 = 1;
while (counter != 11){
EmptyLine();

[Code] .....

My code for those particular triangle is in the work because I cant figure out how to make it look like that.