Java Program to Print Diamond Pattern1 min read

In this tutorial, we will write a java program to print diamond pattern of stars. Before that, you should have knowledge on the following topic in Java.

Java Program to Print Diamond Pattern

Source Code: the program asks the user for the input of a number of rows for the diamond star pattern in java. Then using for loop, the diamond shape pattern is displayed on the screen.

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// Print Diamond star Pattern in java
 
import java.util.Scanner;
 
public class Main
{
  public static void main(String args[])
  {
    int n, j, i, space = 1;
    Scanner scan = new Scanner(System.in);
 
    System.out.print("Enter the no. of Rows: ");
    n = scan.nextInt();
 
    space = n - 1;
 
    for (i = 1; i <= n; i++)
    {
      for (j = 1; j <= space; j++)
      {
        System.out.print(" ");
      }
 
      space--;
      for (j = 1; j <= (2 *i - 1); j++)
      {
        System.out.print("*");
      }
 
      System.out.println();
    }
 
    space = 1;
 
    for (i = 1; i <= (n - 1); i++)
    {
      for (j = 1; j <= space; j++)
      {
        System.out.print(" ");
      }
 
      space++;
      for (j = 1; j <= (2 *(n - i) - 1); j++)
      {
        System.out.print("*");
      }
 
      System.out.println();
    }
  }
}

Output:

java diamond pattern of star

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