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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 : ****** * * * * * * * * * * * * ****** * * * * * * * * * * * * ******
Updated on: 25-Feb-2022
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