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Java Time Clock systemDefaultZone

farenda 2016-05-26 0

java.time.Clock.systemDefaultZone()

The method Clock.systemDefaultZone() returns a clock that will use the best available system clock to convert instant into date and time using default time-zone.

Method signature

The signature of the java.time.Clock.systemDefaultZone() method is as follows:

public static Clock systemDefaultZone()

The method is available since Java 8.

Parameters

The method takes no parameters.

Return value

Returns a clock that is using the best available system clock in the default time zone, never null.

Exceptions

The method throws no exceptions.

Example usage

In the following code we use java.time.Clock.systemDefaultZone():

package com.farenda.java.time;

import java.time.Clock;
import java.time.ZoneId;

public class ClockExample {

    public static void main(String[] args) {
        Clock clock = Clock.systemDefaultZone();
        System.out.println("Clock's zone: " + clock.getZone());
        System.out.println("System.currentTimeMillis: "
                + System.currentTimeMillis());
        System.out.println("Clock's millis: " + clock.millis());

        // It's the same as:
        Clock sysClock = Clock.system(ZoneId.systemDefault());
        System.out.println("System clock's zone: "
                + sysClock.getZone());
    }
}

The above code produces the following output:

Clock's zone: Europe/Warsaw
System.currentTimeMillis: 1464253352633
Clock's millis: 1464253352633
System clock's zone: Europe/Warsaw

References:

  • Compare with java.time.Clock.system(ZoneId zone)
  • Get available zone ids
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Categories Java Tags java, java-time
Previous: Java Time Clock offset(Clock,Duration)
Next: Java Time Clock systemUTC

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