Java System.nanoTime() 与 System.currentTimeMillis()。为什么他们有不同的输出？

Question

给定以下 Java 代码:

class Tester
    {
    public static void main(String[] args)
        {
        System.out.println((System.nanoTime()/1000));
        System.out.println(System.currentTimeMillis());
        }
    }

它给出了输出

26260516785581377785791569

我原以为两者之间会有一点差异，但我错了。
你们知道为什么它会这样吗？

Answer 1

读取方法的javadoc

This method can only be used to measure elapsed time and is not related to any other notion of system or wall-clock time. The value returned represents nanoseconds since some fixed but arbitrary origin time (perhaps in the future, so values may be negative). The same origin is used by all invocations of this method in an instance of a Java virtual machine; other virtual machine instances are likely to use a different origin.

nanoTime() 没有显示时间。