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//Ganesh Gowtham (ganesh.gowtham@valtech.co.in)
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import junit.framework.Assert;
import org.springframework.util.StopWatch;
/**
*
* @author blrsgga (Ganesh Gowtham)
* http:\\ganesh.gowtham.googlepages.com
* ganesh.gowtham@gmail.com
*/
public class WatchUtils
{
private static StopWatch watch = null;
private static final String ASSERT_MSG = "StopWatch should be instantiated with resetAllTasks()";
/**
* creates the Task with name specified
* @param taskName
*/
public static void startTask(String taskName)
{
Assert.assertNotNull(ASSERT_MSG,watch);
watch.start(taskName);
}
/**
* End's the current task
*
*/
public static void endTask()
{
Assert.assertNotNull(ASSERT_MSG,watch);
watch.stop();
}
/**
* prints the summary of Time consumed in formatted manner
* @return
*/
public static String getTaskSummary()
{
Assert.assertNotNull(ASSERT_MSG,watch);
return watch.prettyPrint();
}
/*
* reset's all Old task and create the fresh StopWatch
*/
public static void resetAllTasks()
{
watch = new StopWatch("-- DEBUGGING --");
}
public static void main(String[] args) {
WatchUtils.resetAllTasks();
List<Integer> list = new ArrayList<Integer>();
Map<Integer, Integer> map = new HashMap<Integer, Integer>();
WatchUtils.startTask("time taken for adding objects in Arraylist");
for(int i=0;i<9000;i++){
list.add(i);
}
WatchUtils.endTask();
WatchUtils.startTask("time taken for adding objects in HashMap");
for(int i=0;i<9000;i++){
map.put(i,i);
}
WatchUtils.endTask();
System.out.println(WatchUtils.getTaskSummary());
}
}
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