Star Hourglass Pattern
This program prints an hourglass pattern of stars.
Problem Statement
Write a Java program that prints an hourglass pattern of stars with 5 rows.
Source Code
| 1 | public class StarHourglass { |
| 2 | public static void main(String[] args) { |
| 3 | int n = 5; |
| 4 | for(int i=n; i>=1; i--) { |
| 5 | for(int j=n; j>i; j--) System.out.print(" "); |
| 6 | for(int j=1; j<=2*i-1; j++) System.out.print("*"); |
| 7 | System.out.println(); |
| 8 | } |
| 9 | for(int i=2; i<=n; i++) { |
| 10 | for(int j=n; j>i; j--) System.out.print(" "); |
| 11 | for(int j=1; j<=2*i-1; j++) System.out.print("*"); |
| 12 | System.out.println(); |
| 13 | } |
| 14 | } |
| 15 | } |
Program Output
*********
*******
*****
***
*
***
*****
*******
*********
Explanation
The first loop builds an inverted pyramid where stars decrease row by row, and the second builds an upright pyramid where stars increase, together forming a symmetric hourglass shape.