Java Program to Print 8 Star Pattern

In this article, we will understand how to print 8-star pattern. The pattern is formed by using multiple for-loops and print statements.

Below is a demonstration of the same −

Input

Suppose our input is −

Enter the number : 8

Output

The desired output would be −

The 8 pattern :
******
*    *
*    *
*    *
*    *
*    *
*    *
******
*    *
*    *
*    *
*    *
*    *
*    *
******

Algorithm

Step 1 - START
Step 2 - Declare four integer values namely i, j, k and my_input and a char value my_character.
Step 3 - Read the required values from the user/ define the values
Step 4 - Assign value of ‘my_input – 1’ to ‘k’
Step 5 - We iterate through two nested 'for' loops to get space between the characters.
Step 6 - After iterating through the innermost loop, we iterate through another 'for' loop. This will help print the required character.
Step 7 - Now, print a newline to get the specific number of characters in the subsequent lines.
Step 8 - Display the result
Step 9 - Stop

Example 1

Here, the input is being entered by the user based on a prompt. You can try this example live in our coding ground tool .

import java.util.Scanner;
public class EightPattern{
   public static void main(String[] args){
      int my_input, k, i, j;
      System.out.println("Required packages have been imported");
      Scanner my_scanner = new Scanner(System.in);
      System.out.println("A reader object has been defined ");
      System.out.print("Enter the number : ");
      my_input = my_scanner.nextInt();
      System.out.println("The 8 pattern : ");
      k=my_input*2-1;
      for( i=1;i<=k;i++){
         if(i==1 || i==my_input || i==k)
         for( j=1;j<=my_input;j++){
            if(j==1 || j==my_input)
               System.out.print(" ");
            else
               System.out.print("*");
         } 
         else
         for( j=1;j<=my_input;j++){
            if(j==1 || j==my_input)
               System.out.print("*");
             else
                System.out.print(" ");
         }
         System.out.println();
     }
   }
}

Output

Required packages have been imported
A reader object has been defined
Enter the number : 8
The 8 pattern :
******
*    *
*    *
*    *
*    *
*    *
*    *
******
*    *
*    *
*    *
*    *
*    *
*    *
******

Example 2

Here, the integer has been previously defined, and its value is accessed and displayed on the console.

public class EightPattern{
   public static void main(String[] args){
      int my_input, k, i, j;
      my_input = 8;
      System.out.println("The size is defined as " +my_input);
      System.out.println("The 8 pattern : ");
      k=my_input*2-1;
      for( i=1;i<=k;i++){
         if(i==1 || i==my_input || i==k)
         for( j=1;j<=my_input;j++){
            if(j==1 || j==my_input)
               System.out.print(" ");
            else
               System.out.print("*");
         }
         else
         for( j=1;j<=my_input;j++){
            if(j==1 || j==my_input)
               System.out.print("*");
            else
               System.out.print(" ");
         }
         System.out.println();
      }
   }
}

Output

The size is defined as 8
The 8 pattern :
******
*    *
*    *
*    *
*    *
*    *
*    *
******
*    *
*    *
*    *
*    *
*    *
*    *
******