Java Exercises: Measure how long some code takes to execute in nanoseconds

Java Basic: Exercise-91 with Solution

Write a Java program to measure how long some code takes to execute in nanoseconds.

Pictorial Presentation:

Sample Solution:

Java Code:

import java.lang.*;
 public class Exercise91 {
 public static void main(String[] args)
 {    
    long startTime = System.nanoTime(); 
	// Sample program
	// Display the first 10 natural numbers.
	int i;
	System.out.println ("The first 10 natural numbers are:\n");
	for (i=1;i<=10;i++)
	{      
		System.out.println (i);
	}
		long estimatedTime = System.nanoTime() - startTime;
	System.out.println("Estimated time (in nanoseconds) to get the first 10 natural numbers: "+estimatedTime);
  }
}

Sample Output:

The first 10 natural numbers are:                                      
                                                                       
1                                                                      
2                                                                      
3                                                                      
4                                                                      
5                                                                      
6                                                                      
7                                                                      
8                                                                      
9                                                                      
10                                                                     
Estimated time (in nanoseconds) to get the first 10 natural numbers: 29
1045

Flowchart:

Java Code Editor:

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