Untitled

public class RecursiveStars
{
	int stars;
	int lineNum = 0;
	
	public void makePattern(int starsInLine)
	{
		String pattern = "";
		String s = "*";
		lineNum = starsInLine;
		
		for(int i = 0; i < starsInLine; i++)
		{
			pattern = pattern + s;
		}
		if(pattern != "")
		{
			System.out.println(pattern);
		}
		if(lineNum > 0)
		{
			this.makePattern(lineNum - 1);
			System.out.println(pattern);
		} 
	}
}

import java.io.*;
import java.util.*;

public class TestStars 
{
	public static void main(String[] args) throws IOException
	{
		Scanner input = new Scanner(System.in);
		System.out.println("Enter number of stars");
		int starNum = input.nextInt();
		RecursiveStars myStar = new RecursiveStars();
		myStar.makePattern(starNum);
	}
	
}