Question

How to measure time in milliseconds using Java

Answer 1

public class TimeInMilliseconds {
    public static void main(String args[]) {
            long startTime = System.currentTimeMillis();
            
            for (int i = 0; i < 2000000; i++);
            
            long estimatedTime = System.currentTimeMillis() - startTime;
            
            System.out.println(estimatedTime);
    }
}

 
/*
run:
   
2
  
*/

 

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Answer 2

public class TimeInMilliseconds {
    public static void main(String args[]) {
        try {            
            long startTime = System.currentTimeMillis();
            
            //  public static void sleep(long millis)throws InterruptedException
            Thread.sleep(1000);
            
            long estimatedTime = System.currentTimeMillis() - startTime;
            
            System.out.println(estimatedTime);
        } catch (InterruptedException ie) {
                System.out.println("Thread error: " + ie);
        }
    }
}

 
/*
run:
   
1000
  
*/

 

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