Java nanoseconds to seconds. nanoTime ()获取系统时间，并将其转换为秒。通过直接除以10亿或使用TimeUnit. I am using System. Using TimeUnit. I wanted to get the current date and time in a nanosecond. 1 Second = 1000000000 Nanosecond. concurrent. which means that. java. A nanosecond is defined as one thousandth of a microsecond, a microsecond as one thousandth of a millisecond, a millisecond as one thousandth of a second, a minute as sixty seconds, an hour as sixty minutes, and a day as twenty four hours. For these units, TimeUnit specifies corresponding enum constants: Nanoseconds: One thousandth of a microsecond Microseconds: One thousandth of a millisecond Milliseconds: One thousandth of a second Seconds: One second Minutes: Sixty seconds Hours Jan 19, 2023 · In this post, we will learn how to convert System. 8 version Read More We can just divide the nanoTime by 1_000_000_000, or use the TimeUnit. convert. nanoTime to seconds in Java in different ways. If you are converting nanoseconds to seconds, then this method should be called on TimeUnit. time. Display Current Time To display the current time (hour, minute, second, and nanoseconds), import the java. SECONDS. Oct 16, 2025 · In Java, dealing with time measurements is a common task, especially when it comes to performance monitoring and high-precision timekeeping. nanoTime() method in Java. Duration. I found that System. double seconds = (double)elapsedTime / 1_000_000_000. TimeUnit is an enum in java that contains values representing different time units such as HOURS, MINUTES, SECONDS, MILLISECONDS, NANOSECONDS etc. Is there a way to conver this to, let's say miliseconds or even seconds? Learn about the Java System. How to convert a value from nanoseconds to seconds? Here's the code segment: Using TimeUnit. NANOSECONDSas shown below. nanoTime() to keep track of the applications run time because it solves the majority of the given puzzles in well under a second. means it will provide a time when system up. " 39 I'm wondering what the most accurate way of converting a big nanoseconds value is to milliseconds and nanoseconds, with an upper limit on the nanoseconds of 1000000 (exclusive). Duration object can be created using its static method ofNanos which takes a long value as argument, which is the time interval or the value to be converted to nanoseconds. I need to use the current date and time in a nanosecond. timestamp to regular metrics. In the theoretical case when a negative leap second occurs, no ambiguity is caused, but instead there is a range of Unix The value returned represents nanoseconds since some fixed but arbitrary origin time (perhaps in the future, so values may be negative). Nanoseconds provide a very high level of precision, with one second consisting of one billion (1,000,000,000) nanoseconds. nanoTime() to Seconds in Java. The problem i am having is whem i convert my nanoTime to seconds, it displays in a weird format. nanoTime() will provide nanoseconds, but that is and system elapsed time. The Unix time number 1 483 228 800 is thus ambiguous: it can refer either to start of the leap second (2016-12-31 23:59:60) or the end of it, one second later (2017-01-01 00:00:00). Jul 23, 2025 · It supports nanoseconds, microseconds, milliseconds, seconds, minutes, hours, and days units. concurrent package, that represents various units of time, ranging from nanoseconds to days. Converting nanoseconds to seconds is a straightforward In this article, we will look into How to Convert System. util. toSeconds. We will look at different solutions to this problem in detail with working examples. Nanoseconds (ns) and seconds (s) are two commonly used units of time. nanoTime method is used to get the current value of the JVM’s time source in nanoseconds. convert to convert it. nanoTime to Seconds December 6, 2018 by mkyong We can just divide the nanoTime by 1_000_000_000, or use the TimeUnit. It provides a set of predefined constants, each corresponding to a specific unit of time, including: DAYS HOURS MINUTES SECONDS MILLISECONDS MICROSECONDS NANOSECONDS In this article, we will learn how to get Seconds & Nanoseconds from an Instant using getEpochSecond() & getNano() methods provided in Java 1. nanoTime () method, its usage, and how it measures time in nanoseconds for high-resolution time measurements. A TimeUnit is mainly used to inform time-based methods how a given timing parameter should be interpreted. 9 I do lots of research but did not find any good answer. LocalTime class, and use its now() method: Java – How to convert System. This method is simple mathematics based on following relation between nanoseconds and seconds. The System. The goal is to combine the nanoseconds and milliseconds values to ensure the maximum resolution possible with the limit given. Let us first have a quick look into the System. 0; If you use TimeUnit to convert, you'll get your result as a long, so you'll lose decimal precision but maintain whole number precision. convert进行单位转换，可以将纳秒时间戳转换为秒。示例代码展示了从开始到结束的时间差，并以秒为单位显示。. TimeUnit enum has an overloaded convert() method that takes a single argument of type java. Note 1 second = 1_000_000_000 nanosecond Is there a way to convert the event. Understanding TimeUnit TimeUnit is an enum, included in the java. 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. Division. My current output is 267185117663619 (nanosecond??). TimeUnithas a method toSeconds()that takes a single value as argument and converts it to seconds. 2. 文章浏览阅读6. 1k次。本文介绍如何使用Java的System. Unix time numbers are repeated in the second immediately following a positive leap second. 7gyo3j, 80esl, ipoujc, mzzmf, eulca, jejefb, 7vxfs, uqy3yx, 1p7p4, hfbpj,