Java Alphabet Pattern 15

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 187 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Alphabet Pattern 15

Here`s a program that prints the above alphabet pattern using Java Programming:

Demo.java

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public class Demo
{
 public static void main(String[] args) 
 {
  int i, j, k, m;
  for(i=69; i>=65; i--) 
  {
   for(j=65; j<=i; j++)
    System.out.format("%c", j);
   for(k=i; k<69; k++)
    System.out.print("**");
   for(m=i; m>=65; m--)
    System.out.format("%c", m);
   System.out.println();
  }
 }
}

💻 Testing the Program

When you run the above program, it will print the following output:

Output

ABCDEEDCBA
ABCD**DCBA
ABC****CBA
AB******BA
A********A

🧠 How the Program Works

Let's break down the logic behind the code:

The public class Demo line defines a class named Demo.
The public static void main(String[] args) method is the entry point of the program. This is where the execution starts.
Four integer variables are declared: i, j, k, and m.
The outer for loop: for(i=69; i>=65; i--) runs from i=69 to i=65 (both inclusive), in reverse order. These values correspond to ASCII values of uppercase letters from 'E' to 'A'.
Inside the outer loop, there are three nested loops:
- The first inner loop: for(j=65; j<=i; j++) runs from j=65 (ASCII value of 'A') to j value, which corresponds to the current i value. It prints characters in increasing order, effectively printing 'A' to the current letter.
- The second inner loop: for(k=i; k<69; k++) runs from the current i value to k=68. It prints "" for each iteration. The number of "" printed is (69 - current i) times, creating a pattern of asterisks.
- The third inner loop: for(m=i; m>=65; m--) runs from the current i value to m=65 (ASCII value of 'A'). It prints characters in decreasing order, effectively printing the current letter to 'A'.
- After these three nested loops, a System.out.println(); statement is used to move to the next line after each iteration of the outer loop. This creates a new line for the next row of the pattern.
As the outer loop iterates, it prints each row of the pattern following the specified logic. The pattern starts with a combination of letters and asterisks and gradually transforms into a mirror image of the previous rows.
Once the outer loop completes, the program ends.

💯 Tips for Enhancement:

Explore the versatility of this pattern by adjusting its parameters. Whether you increase or decrease the size, tweak the spacing, or modify the characters used, each change opens up a world of possibilities, allowing you to customize and create your unique visual effects.

✔ Conclusion:

Creating visually appealing patterns is not only a fun endeavour but also a great way to enhance your programming or design skills. We hope this tutorial has inspired you to explore the world of creative coding. Share your creations with us, and let your imagination run wild!

🤗 Closing Call-to-Action:

We'd love to see your unique interpretations of the alphabet pattern. Share your creations in the comments below, and don't hesitate to reach out if you have any questions or suggestions for future tutorials. Happy coding!