Java Number Pattern 1

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 265 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Number Pattern 1

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

Demo.java

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public class Demo
{
 public static void main(String[] args)
 {
  int i, j;
  for(i=5; i>=1; i--) 
  {
   for(j=1; j<=i; j++)
    System.out.print(j);
   System.out.println();
  }
 }
}

💻 Testing the Program

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

Output

🧠 How the Program Works

Let's break down the logic behind the code:

Class Declaration: The program starts with the declaration of a class named Demo.
main Method Declaration: Inside the Demo class, there's a public static void main(String[] args) method declaration. This is the entry point of the program, where the execution begins.
Variable Declaration: Two integer variables i and j are declared. These will be used as loop control variables.
Outer Loop (i loop): The first loop is a for loop that runs from i = 5 down to i = 1. This loop controls the number of rows in the pattern.
Inner Loop (j loop): Inside the outer loop, there's another for loop with j running from j = 1 up to the current value of i. This loop controls the printing of numbers in each row.
Printing Numbers: Inside the inner loop, the program uses System.out.print(j) to print the value of j without moving to the next line. This prints the numbers from 1 to the current value of i in the same line.
Newline Character: After the inner loop completes, a System.out.println() statement is used to move to the next line. This creates a new line, ensuring that the next row of numbers will be printed on a new line.
Repeat: The outer loop continues to iterate, decrementing the value of i in each iteration, and the inner loop and printing process repeat for each row.

💯 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 number 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!