/*
* Created on Oct 31, 2007
*
* Licensed 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.
*
* Copyright @2007-2013 the original author or authors.
*/
package org.fest.swing.test.util;
import static java.lang.System.currentTimeMillis;
/**
* @author Yvonne Wang
*/
public final class StopWatch {
private boolean started;
private boolean stopped;
private long startTime;
private long endTime;
public static StopWatch startNewStopWatch() {
StopWatch stopWatch = new StopWatch();
stopWatch.start();
return stopWatch;
}
public void start() {
started = true;
stopped = false;
startTime = currentTimeMillis();
endTime = 0;
}
public void stop() {
stopped = true;
endTime = currentTimeMillis();
}
public long ellapsedTime() {
if (!started) {
throw new IllegalStateException("stopwatch has not been started");
}
if (!stopped) {
throw new IllegalStateException("stopwatch has not been stopped");
}
return endTime - startTime;
}
}