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How do I time a method execution in Java
You should get a start time before making a call and end time after method execution. The difference is the time taken.
Example
import java.util.Calendar; public class Tester { public static void main(String[] args) { long startTime = Calendar.getInstance().getTimeInMillis(); longRunningMethod(); long endTime = Calendar.getInstance().getTimeInMillis(); System.out.println("Time taken: " + (endTime - startTime) + " ms"); } public static void longRunningMethod() { try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } }
Output
Time taken: 1012 ms
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