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Instant start = Instant.now();
Thread.sleep(63553);
Instant end = Instant.now();
System.out.println(Duration.between(start, end)); // prints PT1M3.553S
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long start = System.currentTimeMillis();
class.method();
long time = System.currentTimeMillis() - start;
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long startTime = System.nanoTime();
myCall();
long stopTime = System.nanoTime();
System.out.println(stopTime - startTime);