How to calculate EXECUTION TIME in Java! ⏱️

How to calculate execution time of a program tutorial example explained

This can be a helpful way to find the execution time if the Big O notation is somewhere between a best case and worst case.

For example: A user can adjust the clock during execution, even to a past date, and this would give you negative time.

#calculate #execution #time

[BroCodez]

IMPORTANT NOTES:

1. This can be a helpful way to find the execution time if the Big O notation is somewhere between a best case and worst case.

2. I would not recommend using System.currentTimeMillis(), it's tied to your OS.
For example: A user can adjust the clock during execution, even to a past data, and this would give you negative time.

public class Main {

public static void main(String[] args) throws InterruptedException{

long start = System.nanoTime();

// program

Thread.sleep(3000);

//

long duration = (System.nanoTime() -
System.out.println(duration + "ms");
}
}

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