/**
  * A timing utility class useful for timing code segments
*/
public class TimeInterval {

    private long startTime, endTime;
    private long elapsedTime; // Time interval in milliseconds

    // Commands
    public void startTiming() {
        elapsedTime = 0;
        startTime = System.currentTimeMillis();
    }

    public void endTiming() {
        endTime = System.currentTimeMillis();
        elapsedTime = endTime - startTime;
    }

    // Queries
    public double getElapsedTime() {
        return (double) elapsedTime / 1000.0;
    }

}