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Java - System.nanoTime() - what this methods really returns
11 points
System.nanoTime() method returns the current value of the running Java Virtual Machine's high-resolution time source, in nanoseconds. The best application of this time could be measuring how much time took some operations.
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long t1 = System.nanoTime();2
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Thread.sleep(1000);4
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long t2 = System.nanoTime();6
long dt = t2 - t1;7
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System.out.println("Sleeping time is " + dt + " ns.");Output:
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Sleeping time is 1000143702 ns.