Java Alphabet Pattern 25

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 250 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Alphabet Pattern 25

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;
  int k = 65;
  for(i=65; i<=69; i++)
  {
   for(j=69; j>=i; j--)
    System.out.format("%2c", k++);
   System.out.println();
  }
 }
}

💻 Testing the Program

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

Output

A B C D E
F G H I
J K L
M N
O

🧠 How the Program Works

Let's break down the logic behind the code:

public class Demo: This line defines a class named "Demo."
public static void main(String[] args): This is the entry point of the program. The main method is where the program execution begins.
Inside the main method:
1. int i, j;: Declare two integer variables i and j without initializing them.
2. int k = 65;: Initialize an integer variable k with the value 65. This is the ASCII code for the letter 'A'.
3. for(i=65; i<=69; i++): Start a loop with i initialized to 65 and continues as long as i is less than or equal to 69. This outer loop controls the number of rows in the pattern.
4. Inside the outer loop, start another loop with j initialized to 69 and continues as long as j is greater than or equal to i. This inner loop controls the number of characters printed in each row.
  - System.out.format("%2c", k++);: Inside the inner loop, this line prints a character using System.out.format. The %2c is a format specifier that indicates that a character should be printed with a width of 2 characters. k++ is used to print the character corresponding to the current value of k and then increment k. Since k was initialized to 65 (ASCII code for 'A'), it will print 'A' in the first iteration, 'B' in the second, and so on.
5. After the inner loop completes, System.out.println(); is used to print a newline character, moving to the next row in the pattern.
The outer loop continues until i reaches 70. During each iteration of the outer loop, it prints one row of characters with decreasing values of j, and then moves to the next row. The inner loop controls the number of characters printed on each row, and the characters are printed in a right-angled triangle pattern.

💯 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!