Timing program execution. : Runtime System « Development « Java Tutorial

1. Java Tutorial
2. Development
3. Runtime System

class Elapsed {
  public static void main(String args[]) {
    long start, end;

    System.out.println("Timing a for loop from 0 to 1,000,000");

    start = System.currentTimeMillis(); // get starting time
    for (int i = 0; i < 1000000; i++)
      ;
    end = System.currentTimeMillis(); // get ending time

    System.out.println("Elapsed time: " + (end - start));
  }
}