## com.google.gwt.core.client
Class Duration

    java.lang.Object
      com.google.gwt.core.client.Duration

    public class Duration

extends java.lang.Object

A utility class for measuring elapsed time.

Constructor Summary
`Duration()` Creates a new Duration whose start time is now.

Method Summary
`static double` `currentTimeMillis()` Returns the same result as `System.currentTimeMillis()`, but as a double.
`int` `elapsedMillis()` Returns the number of milliseconds that have elapsed since this object was created.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Duration

    public Duration()

  Creates a new Duration whose start time is now.

Method Detail

### currentTimeMillis

    public static double currentTimeMillis()

  Returns the same result as `System.currentTimeMillis()`, but as a double. Because emulated long math is significantly slower than doubles in web mode, this method is to be preferred.

### elapsedMillis

    public int elapsedMillis()

  Returns the number of milliseconds that have elapsed since this object was created.