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package lab8multiplethread;
import java.util.*;
/**
 *
 * @author Peilos
 */
public class TimeCal {
    
    long startTime, currentTime;
    
    public void TakeStartTime()
    {
        GregorianCalendar gcl = new GregorianCalendar();
        gcl.setTime(new Date());
        startTime = gcl.getTimeInMillis();
    }
    
    long getNewTimeDifference()
    {
        GregorianCalendar gcl = new GregorianCalendar();
        gcl.setTime(new Date());
        currentTime = gcl.getTimeInMillis();
        return (currentTime - startTime);
    }
    
    @SuppressWarnings("empty-statement")
    public void RunForSomeTime(long timeInMillis)
    {
        this.TakeStartTime();
        while(this.getNewTimeDifference()<timeInMillis);
        System.out.println("I've run for "+this.getNewTimeDifference()+" ms.");
    }

}