How do I calculate process execution time in higher resolution?
Category: java.lang, viewed: 2K time(s).
This example demonstrates how to use the System.nanoTime() method to calculate processing execution time in higher resolution. The processing time calculated in nanoseconds resolution.
package org.kodejava.example.lang;
public class NanosecondsTimeResolution {
public static void main(String[] args) {
//
// Get process execution start time in nanoseconds.
//
long start = System.nanoTime();
System.out.println("Process start... " + start);
try {
Thread.sleep(5000); // Simulate a long process.
} catch (InterruptedException e) {
e.printStackTrace();
}
//
// Get process execution finish time in nanoseconds.
//
long finish = System.nanoTime();
System.out.println("Process finish... " + finish);
//
// Calculate the process execution time.
//
long execTime = finish - start;
System.out.println("Processing time = " + execTime + "(ns)");
}
}