TimeCommand.java #1

package com.perforce.ts.rest;

import java.util.Date;

/**
 * *
 * Simple timer.
 * call start(), do stuff, call stop();
 *
 * Not thread safe.
 *
 * @author jbrown
 */
public final class TimeCommand {

    private long start = 0;
    private long end = 0;

    /**
     * start the clock
     */
    public void start() {
        Date now = new Date();
        start = now.getTime();
        end = 0;
    }

    /**
     * stop the clock
     *
     * @return number of milliseconds between start and stop
     */
    public long stop() {
        Date now = new Date();
        end = now.getTime();
        return (end - start);
    }

    /**
     * Retrieve milliseconds
     *
     * @return number of milliseconds between start and stop
     */
    public long getMilliseconds() {
        return (end - start);
    }
    
    // diff time as string
    @Override
    public String toString() {
        if ( end == 0 ) {
            stop();
        }
        return "Time[" + getMilliseconds() + " ms]";
    }
}