Java - System.currentTimeMillis(); Not Returning Difference

Question

For some reason I am getting a consistent 3600 returned by the function:

private static long getCountdownLeft() {
    long now = System.currentTimeMillis();
         


        

Answer 1

Hey I have just added print statements for prev, new and elapsed variables. The values are

previous time 1343882409054

present time 1343882409054

elapsed time 0

Time is 3600

So your millisLeft will always be 3600 .

But if you try using

System.nanoTime()

the values are,

previous time 519222175869357

present time 519222175923421

elapsed time 54064

Time is 3545

So you have to be more granular here and consider using System.nanoTime().