Java Program to Print Alphabet Y Pattern

In this Java pattern program, we show the steps to print the stars in an Alphabet Y shape or pattern using for loop, while loop, and functions.

import java.util.Scanner;

public class Example 
{
	private static Scanner sc;
	
	public static void main(String[] args) 
	{
		sc = new Scanner(System.in);
		
		System.out.print("Enter Rows = ");
		int rows = sc.nextInt();

		for (int i = 0; i < rows; i++) 
		{
			for (int j = 0; j < rows; j++) 
			{
				if (((i + j == rows - 1 || i == j) && (i < rows / 2)) || 
						(j == rows / 2 && i > rows / 2 - 1)) 
				{
					System.out.printf("*");
				} 
				else 
				{
					System.out.printf(" ");
				}
			}
			System.out.println();
		}
	}
}

Enter Rows = 12
*          *
 *        * 
  *      *  
   *    *   
    *  *    
     **     
      *     
      *     
      *     
      *     
      *     
      *     

Within this Alphabet Y shape or Pattern program, we replaced the for loop with a while loop to print the stars at each position. For more Alphabet Patterns and star pattern programs, please use the hyperlinks.

import java.util.Scanner;

public class Example 
{
	private static Scanner sc;
	
	public static void main(String[] args) 
	{
		sc = new Scanner(System.in);
		int rows, i, j;
		
		System.out.print("Enter Rows = ");
		rows = sc.nextInt();

	    i = 0 ;
		while ( i < rows )
		{
			j = 0;
			while ( j < rows) 
			{
				if ((i + j == rows - 1) || (i == j && i < rows / 2))
				{
					System.out.printf("*");
				} 
				else 
				{
					System.out.printf(" ");
				}
				j++;
			}
			System.out.println();
			i++;
		}
	}
}

Enter Rows = 15
*             *
 *           * 
  *         *  
   *       *   
    *     *    
     *   *     
      * *      
       *       
      *        
     *         
    *          
   *           
  *            
 *             
*              

In this program, we created an AlphabetYShape function to print the Alphabet Y Pattern or shape filled with stars on rows and columns.

import java.util.Scanner;

public class Example 
{
	private static Scanner sc;
	
	public static void main(String[] args) 
	{
		sc = new Scanner(System.in);
		
		System.out.print("Enter Rows = ");
		int rows = sc.nextInt();

		System.out.print("Enter Character = ");
		char a = sc.next().charAt(0);

		AlphabetYShape(rows, a);
	}
	
	public static void AlphabetYShape(int rows, char a) 
	{
		for (int i = 0; i < rows; i++) 
		{
			for (int j = 0; j < rows; j++) 
			{
				if (((i + j == rows - 1 || i == j) && (i < rows / 2)) || 
						(j == rows / 2 && i > rows / 2 - 1)) 
				{
					System.out.printf("%c", a);
				} 
				else 
				{
					System.out.printf(" ");
				}
			}
			System.out.println();
		}
	}
}