Java System class nanoTime() method with example

System class nanoTime() method: Here, we are going to learn about the nanoTime() method of System class with its syntax and example.
Submitted by Preeti Jain, on September 15, 2019

System class nanoTime() method

nanoTime() method is available in java.lang package.
nanoTime() method is used to return the value of the current system time in nanoseconds.
nanoTime() method is static, it is accessible with the class name too.
nanoTime() method does not throw any exception.

Syntax:

    public static long nanoTime ();

Parameter(s):

It does not accept any parameter.

Return value:

The return type of this method is long, it returns the current system time in nanoseconds.

Example:

// Java program to demonstrate the example of 
// nanoTime() method of System Class

public class NanoTime {
    public static void main(String[] args) {
        System.out.print("The current time is: ");
        System.out.println(System.nanoTime() + " ns");
    }
}

Output

E:\Programs>javac NanoTime.java
E:\Programs>java NanoTime
The current time is: 4254185681871084 ns

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