get current system time in nanoseconds java
package com.tutorialspoint; import java.lang.*; public class SystemDemo { public static void main(String[] args) { // returns the current value of the system timer, in nanoseconds System.out.print("time in nanoseconds = "); System.out.println(System.nanoTime()); // returns the current value of the system timer, in milliseconds System.out.print("time in milliseconds = "); System.out.println(System.currentTimeMillis()); } }