Swastika Pattern in Java

In this section, we will learn about how we can write the code for Swastika Pattern in Java by using stars or any other special characters and with the user-defined rows and columns. It is one of the most difficult pattern programs to code in Java. In order to get the perfect Swastika, we have to make sure that the user will enter odd numbers for rows and columns because it will be very easy to find the mid of rows and columns.

We will use the 'for' loop to print the Swastika in the following way:

SwastikaPatternExample.java

// import required classes
import java.util.Scanner;
// create class SwastikaPatternExample for printing Swastika
class SwastikaPatternExample
{
	// main() method start
	public static void main (String[] args)
	{
		int rows, cols;
		Scanner sc = new Scanner(System.in);
		System.out.println("Please enter odd numbers for rows and colums to get perfect Swastika.");
		System.out.println("Enter total rows");
		rows = sc.nextInt();
		System.out.println("Enter total colums");
		cols = sc.nextInt();
		
		// close Scanner class
		sc.close();
		
		// call designSwastika() method that will design Swastika for the specified rows and cols
		designSwastika(rows, cols);
	}
	// create designSwastika() method to print Swastika
	static void designSwastika(int rows, int cols)
	{
		for (int u = 0; u < rows; u++) {
			for (int v = 0; v < cols; v++)
			{
				// check whether u is less than from half of rows or not
				if (u < rows / 2)
				{
					// check whether v is less than from half of cols or not
					if (v < cols / 2)
					{
						// print '*' if v == 0
						if (v == 0) 
						{
							System.out.print("*");
						}
						// else we print space
						else 
						{
							System.out.print(" "+ " ");
						}
					}
					// check whether v is equal to half of cols or not
					else if (v == cols / 2) 
					{
						System.out.print(" *");
					}
					else
					{
						// u = 0 denotes 1st row that will have '*'
						if (u == 0)
							System.out.print(" *");
					}
				}
				// check whether u is equal to half of rows or not
				else if (u == rows / 2) {
					System.out.print("* ");
				}
				else
				{
					// When u > rows/2, the middle and last column will have '*'
					if (v == cols / 2 || v == cols - 1)
					{
						System.out.print("* ");
					}
					else if (u == rows - 1)
					{
						// if v <= cols/2 OR if it is last column, the last row will be have '*'
						if (v <= cols / 2 || v == cols - 1) 
						{
							System.out.print("* ");
						}
						else {
							System.out.print(" "+ " ");
						}
					}
					else
					System.out.print(" "+" ");
				}
			}
			System.out.print("\n");
		}
	}
}

Output: