Java Program to Print Alphabet W Pattern

In this Java pattern program, we show the steps to print the stars in an Alphabet W 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(j == 0 || j == rows - 1)
				{
					System.out.printf("* ");
				} 
				else if ((i + j == rows - 1 || i == j) && (i >= rows / 2))
				{
					System.out.printf("* ");
				}
				else 
				{ 
					System.out.printf("  ");
				}
			}
			System.out.println();
		}
	}
}

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

Within this Alphabet W 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(j == 0 || j == rows - 1)
				{
					System.out.printf("* ");
				} 
				else if ((i + j == rows - 1 || i == j) && (i >= rows / 2))
				{
					System.out.printf("* ");
				}
				else 
				{ 
					System.out.printf("  ");
				}
				j++;
			}
			System.out.println();
			i++;
		}
	}
}

Enter Rows = 17
*                               * 
*                               * 
*                               * 
*                               * 
*                               * 
*                               * 
*                               * 
*                               * 
*               *               * 
*             *   *             * 
*           *       *           * 
*         *           *         * 
*       *               *       * 
*     *                   *     * 
*   *                       *   * 
* *                           * * 
*                               * 

In this program, we created an AlphabetWShape function to print the Alphabet W 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);

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