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    <p>According to the <a href="http://java.sun.com/javase/6/docs/api/java/util/Timer.html" rel="noreferrer"><code>Timer</code></a> documentation, in Java 1.5 onwards, you should prefer the <a href="http://java.sun.com/javase/6/docs/api/java/util/concurrent/ScheduledThreadPoolExecutor.html" rel="noreferrer"><code>ScheduledThreadPoolExecutor</code></a> instead. (You may like to create this executor using <a href="http://java.sun.com/javase/6/docs/api/java/util/concurrent/Executors.html" rel="noreferrer"><code>Executors</code></a><code>.newSingleThreadScheduledExecutor()</code> for ease of use; it creates something much like a <code>Timer</code>.)</p> <p>The cool thing is, when you schedule a task (by calling <code>schedule()</code>), it returns a <a href="http://java.sun.com/javase/6/docs/api/java/util/concurrent/ScheduledFuture.html" rel="noreferrer"><code>ScheduledFuture</code></a> object. You can use this to cancel the scheduled task. You're then free to submit a new task with a different triggering time.</p> <p>ETA: The <code>Timer</code> documentation linked to doesn't say anything about <code>ScheduledThreadPoolExecutor</code>, however the <a href="http://openjdk.java.net/" rel="noreferrer">OpenJDK</a> version had this to say:</p> <blockquote> <p>Java 5.0 introduced the <code>java.util.concurrent</code> package and one of the concurrency utilities therein is the <code>ScheduledThreadPoolExecutor</code> which is a thread pool for repeatedly executing tasks at a given rate or delay. It is effectively a more versatile replacement for the <code>Timer</code>/<code>TimerTask</code> combination, as it allows multiple service threads, accepts various time units, and doesn't require subclassing <code>TimerTask</code> (just implement <code>Runnable</code>). Configuring <code>ScheduledThreadPoolExecutor</code> with one thread makes it equivalent to <code>Timer</code>.</p> </blockquote>
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    1. USChris Jester-Young
    1. USChris Jester-Young
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    1. COScheduledThreadPoolExecutor is talked about in this Timer: http://developer.android.com/reference/java/util/Timer.html
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      1. USErik B
    2. COThe issue with this approach is that you no longer have access to `TimerTask.scheduledExecutionTime()` inside of your task. You won't be able to determine if the task is "tardy" and shouldn't execute.
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      1. USJonathan Spooner
    3. COuse `myScheduledThreadPoolExecutor.getQueue().clear()` to remove all scheduled tasks that haven't yet run but you can't use this technique with `Executors.newSingleThreadScheduledExecutor()` instead, you have to instantiate a `new ScheduledThreadPoolExecutor(1)` because only the interface methods are exposed on the object returned by the Executor.
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