Diamond_Star_Pattern.java

// Java Program to print
// Diamond Star Pattern
import java.util.*;
  
public class Diamond_Star_Pattern {
  
    // Function to demonstrate pattern
    public static void printPattern(int n)
    {
        int i, j;
        int num = 1;
        // outer loop to handle upper part
        for (i = 1; i <= n; i++) {
            // inner loop to print spaces
            for (j = 1; j <= n - i; j++) {
                System.out.print(" ");
            }
            // inner loop to print stars
            for (j = 1; j <= 2 * i - 1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
  
        // outer loop to handle lower part
        for (i = n-1; i >= 1; i--) {
            // inner loop to print spaces
            for (j = 1; j <= n - i; j++) {
                System.out.print(" ");
            }
            // inner loop to print stars
            for (j = 1; j <= 2 * i - 1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
  
    // Driver Function
    public static void main(String args[])
    {
        int n = 6;
        printPattern(n);
    }
}