edu.princeton.cs.introcs.Stopwatch Maven / Gradle / Ivy
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package edu.princeton.cs.introcs;
/*************************************************************************
* Compilation: javac Stopwatch.java
*
*
*************************************************************************/
/**
* Stopwatch. This class is a data type for measuring
* the running time (wall clock) of a program.
*
* For additional documentation, see
* Section 3.2 of
* Introduction to Programming in Java: An Interdisciplinary Approach
* by Robert Sedgewick and Kevin Wayne.
*/
public class Stopwatch {
private final long start;
/**
* Create a stopwatch object.
*/
public Stopwatch() {
start = System.currentTimeMillis();
}
/**
* Return elapsed time (in seconds) since this object was created.
*/
public double elapsedTime() {
long now = System.currentTimeMillis();
return (now - start) / 1000.0;
}
}
/*************************************************************************
* Copyright 2002-2012, Robert Sedgewick and Kevin Wayne.
*
* This file is part of stdlib-package.jar, which accompanies the textbook
*
* Introduction to Programming in Java: An Interdisciplinary Approach
* by R. Sedgewick and K. Wayne, Addison-Wesley, 2007. ISBN 0-321-49805-4.
*
* http://introcs.cs.princeton.edu
*
*
* stdlib-package.jar is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* stdlib-package.jar is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with stdlib-package.jar. If not, see http://www.gnu.org/licenses.
*************************************************************************/