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Java: Display the first 10 natural numbers

Java Conditional Statement: Exercise-10 with Solution

Write a Java program to display the first 10 natural numbers.

Pictorial Presentation:

Java conditional statement Exercises: Display the first 10 natural numbers

Sample Solution:

Java Code:

public class Exercise10 {
    
  public static void main(String[] args)
    {     
    int i;
	System.out.println ("The first 10 natural numbers are:\n");
	for (i=1;i<=10;i++)
	{      
		System.out.println (i);
	}
System.out.println ("\n");
}
}

Sample Output:

The first 10 natural numbers are:                                                                                                     
1                                                                                                     
2                                                                                                     
3                                                                                                     
4                                                                                                     
5                                                                                                     
6                                                                                                     
7                                                                                                     
8                                                                                                     
9                                                                                                     
10

Flowchart:

Flowchart: Java Conditional Statement Exercises - Display the first 10 natural numbers

Java Code Editor:

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Next: Write a program in Java to display n terms of natural numbers and their sum.

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Java: Tips of the Day

IsPowerOfTwo

Checks if a value is positive power of two.

To understand how it works let's assume we made a call IsPowerOfTwo(4).

As value is greater than 0, so right side of the && operator will be evaluated.

The result of (~value + 1) is equal to value itself. ~100 + 001 => 011 + 001 => 100. This is equal to value.

The result of (value & value) is value. 100 & 100 => 100.

This will value the expression to true as value is equal to value.

public static boolean isPowerOfTwo(final int value) {
    return value > 0 && ((value & (~value + 1)) == value);
}

Ref: https://bit.ly/3sA5d4I

 





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