/*

* Licensed to the Apache Software Foundation (ASF) under one

* or more contributor license agreements. See the NOTICE file

* distributed with this work for additional information

* regarding copyright ownership. The ASF licenses this file

* to you under the Apache License, Version 2.0 (the

* "License"); you may not use this file except in compliance

* with the License. You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing,

* software distributed under the License is distributed on an

* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

* KIND, either express or implied. See the License for the

* specific language governing permissions and limitations

* under the License.

*/

/*

* Contributor(s): Thomas Ball

*/

/**

* A simple class for calculating and reporting elapsed system time.

* Each timer has a start time and may have an end time. If an

* elapsed time value is requested of a timer which doesn't have its

* stop time set, the current system time is used.

*

* @author Tom Ball

*/

public class ElapsedTimer {

// System times in milliseconds; see System.currentTimeMillis();

private long startTime;

private long stopTime;

/**

* Create a new timer.

*/

public ElapsedTimer() {

reset();

}

/**

* Stop the current timer; that is, set its stopTime.

*/

public void stop() {

stopTime = System.currentTimeMillis();

}

/**

* Reset the starting time to the current system time.

*/

public final void reset() {

startTime = System.currentTimeMillis();

}

public long getElapsedMilliseconds() {

long st = (stopTime == 0) ? System.currentTimeMillis() : stopTime;

return st - startTime;

}

public int getElapsedSeconds() {

return (int)(getElapsedMilliseconds() / 1000L);

}

public String toString() {

long ms = getElapsedMilliseconds();

int sec = (int)(ms / 1000L);

int frac = (int)(ms % 1000L);

StringBuffer sb = new StringBuffer();

sb.append(ms / 1000L);

sb.append('.');

sb.append(ms % 1000L);

sb.append(" seconds");

return sb.toString();

}

}