Java Alphabet Pattern 29

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 128 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Alphabet Pattern 29

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 = 69;
  for(i=k; i>=65; i--)
  { 
   for(j=k; j>=65; j--)
   {
    if(j > i)
     System.out.format("%c ", j);
    else
     System.out.format("%c ", i);
   }
   for(j=66; j<=k; j++)
   {
    if(j > i)
     System.out.format("%c ", j);
    else
     System.out.format("%c ", i);
   }
   System.out.println();
  }
  for(i=66; i<=k; i++)
  {
   for(j=k; j>=65; j--)  
   {
    if(j > i)
     System.out.format("%c ", j);
    else
     System.out.format("%c ", i);
   }
   for(j=66; j<=k; j++)
   {
    if(j > i)
     System.out.format("%c ", j);
    else
     System.out.format("%c ", i);
   }
   System.out.println();
  }
 }
}

💻 Testing the Program

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

Output

E E E E E E E E E
E D D D D D D D E
E D C C C C C D E
E D C B B B C D E
E D C B A B C D E
E D C B B B C D E
E D C C C C C D E
E D D D D D D D E
E E E E E E E E E

🧠 How the Program Works

Let's break down the logic behind the code:

public class Demo: This line declares a Java class named "Demo."
public static void main(String[] args): This is the main method of the program, where execution starts when you run the program. It takes an array of strings args as input, although it doesn't use them in this case.
Inside the main method, several variables are declared:
- int i, j;: These are integer variables used as loop counters.
- int k = 69;: This initializes k to the ASCII value of 'E' (which is 69). k is used to control the size of the diamond.
The program uses two nested for loops to print the upper half of the diamond pattern:
1. The outer loop (for(i=k; i>=65; i--)) iterates from the value of k (69) down to 65 (ASCII value of 'A').
2. The inner loop (for(j=k; j>=65; j--)) also iterates from k down to 65.
3. Inside the inner loop, there's an if-else statement that determines what character to print:
  - If j is greater than i, it prints the character represented by j.
  - Otherwise, it prints the character represented by i.
4. After the inner loop, another inner loop (for(j=66; j<=k; j++)) iterates from 66 (ASCII value of 'B') up to k.
5. This inner loop again has an if-else statement to determine what character to print.
6. Finally, a newline character is printed to move to the next line of the diamond.
After printing the upper half of the diamond, there's a similar set of nested for loops that print the lower half of the diamond:
- The outer loop (for(i=66; i<=k; i++)) iterates from 66 (ASCII value of 'B') up to k.
- The inner loops are the same as those in the upper half, with slight differences in loop initialization and conditions.
- This part also prints the diamond shape and moves to the next line after each row.
The main method ends, and the program execution completes.

💯 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!