Compute elapsed time in hours in Java

Java 8 Object Oriented Programming Programming

To get the elapsed time of an operation in hours in Java, we use the System.currentTimeMillis() method. The java.lang.System.currentTimeMillis() returns the current time in milliseconds.

Declaration −The java.lang.System.currentTimeMillis() is declared as follows −

public static long currentTimeMillis()

The method returns time difference in milliseconds between the current time and midnight, January 1, 1970 (UTC or epoch time).

Let us see a program to compute the elapsed time of an operation in hours in Java −

Example

Live Demo

public class Example {
   public static void main(String[] args) throws Exception {
      // finding the time before the operation is executed
      long start = System.currentTimeMillis();
      for (int i = 0; i <5; i++) {
         Thread.sleep(60);
      }
      // finding the time after the operation is executed
      long end = System.currentTimeMillis();
      // finding the time difference
      float msec = end - start;
      // converting it into seconds
      float sec= msec/1000F;
      // converting it into minutes
      float minutes=sec/60F;
      // converting it into hours
      float hours=minutes/60F;
      System.out.println(hours + " hours");
   }
}

Output

8.333334E-5 hours

Arjun Thakur

Published on 08-Jan-2019 07:20:52

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