What's the purpose of sleep(long millis, int nanos)?

Question

In the JDK, it\'s implemented as:

public static void sleep(long millis, int nanos) 
throws InterruptedException {
if (millis < 0) {
        throw new Ille         


        

Answer 1

It looks like a future-proof addition, for when we all have petaflop laptops and we routinely specify delays in nanoseconds. Meanwhile if you specify a nanosecond delay, you get a millisecond delay.

When hardware improves and the JVM follows, the app will not need to be rewritten.