How to print Hollow Pyramid Pattern in Java - Step by Step Examples

How to print Hollow Pyramid Pattern in Java ?

Answer

In Java, printing a hollow pyramid pattern involves similar nested loop logic. The outer loop manages rows, while inner loops control spaces and stars to create the hollow structure.

✐ Examples

1 Hollow Pyramid Pattern of height 5

In this example,

Set the number of rows for the pyramid.
Use nested loops: one for rows, one for spaces, and one for stars.
In the inner loops, print spaces for the spaces between stars and print stars for the pyramid edges.
Adjust conditions to print stars only at the pyramid edges and spaces elsewhere to create the hollow effect.
Print each row to create the hollow pyramid pattern.

Java Program

public class Main {
    public static void main(String[] args) {
        int rows = 5;
        for (int i = 1; i <= rows; i++) {
            // Print spaces
            for (int j = i; j < rows; j++) {
                System.out.print("  ");
            }
            // Print stars for the pyramid
            for (int k = 1; k < (2 * i); k++) {
                if (k == 1 || k == (2 * i - 1) || i == rows) {
                    System.out.print("* ");
                } else {
                    System.out.print("  ");
                }
            }
            System.out.println();
        }
    }
}

Output

        * 
      *   * 
    *       * 
  *           * 
* * * * * * * * *

Summary

In this tutorial, we learned How to print Hollow Pyramid Pattern in Java language with well detailed examples.

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