深入浅出多线程（4）对CachedThreadPool OutOfMemoryError问题的一些想法

     线程池是conncurrent包提供给我们的一个重要的礼物。使得我们没有必要维护自个实现的心里很没底的线程池了。但如何充分利用好这些线程池来加快我们开发与测试效率呢？当然是知己知彼。本系列就说说对cachedthreadpool使用的一下问题。<br>    下面是对cachedthreadpool的一个测试，程序有问题吗？
<div style="border: 1px solid #cccccc; padding: 4px 5px 4px 4px; background-color: #eeeeee; font-size: 13px; width: 98%;"><span style="color: #0000ff;">package</span><span style="color: #000000;"> net.blogjava.vincent;<br><br></span><span style="color: #0000ff;">import</span><span style="color: #000000;"> java.util.concurrent.blockingqueue;<br></span><span style="color: #0000ff;">import</span><span style="color: #000000;"> java.util.concurrent.executorservice;<br></span><span style="color: #0000ff;">import</span><span style="color: #000000;"> java.util.concurrent.executors;<br></span><span style="color: #0000ff;">import</span><span style="color: #000000;"> java.util.concurrent.futuretask;<br></span><span style="color: #0000ff;">import</span><span style="color: #000000;"> java.util.concurrent.threadpoolexecutor;<br></span><span style="color: #0000ff;">import</span><span style="color: #000000;"> java.util.concurrent.timeunit;<br><br></span><span style="color: #0000ff;">public</span><span style="color: #000000;"> </span><span style="color: #0000ff;">class</span><span style="color: #000000;"> cachedthreadpoolissue {<br><br>    </span><span style="color: #008000;">/**</span><span style="color: #008000;"><br>     * </span><span style="color: #808080;">@param</span><span style="color: #008000;"> args<br>     </span><span style="color: #008000;">*/</span><span style="color: #000000;"><br>    </span><span style="color: #0000ff;">public</span><span style="color: #000000;"> </span><span style="color: #0000ff;">static</span><span style="color: #000000;"> </span><span style="color: #0000ff;">void</span><span style="color: #000000;"> main(string[] args) {<br>        <br>        executorservice es </span><span style="color: #000000;">=</span><span style="color: #000000;"> executors.newcachedthreadpool();<br>        </span><span style="color: #0000ff;">for</span><span style="color: #000000;">(</span><span style="color: #0000ff;">int</span><span style="color: #000000;"> i </span><span style="color: #000000;">=</span><span style="color: #000000;"> </span><span style="color: #000000;">1</span><span style="color: #000000;">; i</span><span style="color: #000000;"><</span><span style="color: #000000;">8000</span><span style="color: #000000;">; i</span><span style="color: #000000;">++</span><span style="color: #000000;">)<br>            es.submit(</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> task());<br><br>    }<br><br>}<br></span><span style="color: #0000ff;">class</span><span style="color: #000000;"> task </span><span style="color: #0000ff;">implements</span><span style="color: #000000;"> runnable{<br><br>    @override<br>    </span><span style="color: #0000ff;">public</span><span style="color: #000000;"> </span><span style="color: #0000ff;">void</span><span style="color: #000000;"> run() {<br>    </span><span style="color: #0000ff;">try</span><span style="color: #000000;"> {<br>        thread.sleep(</span><span style="color: #000000;">4000</span><span style="color: #000000;">);<br>    } </span><span style="color: #0000ff;">catch</span><span style="color: #000000;"> (interruptedexception e) {<br>        </span><span style="color: #008000;">//</span><span style="color: #008000;"> todo auto-generated catch block</span><span style="color: #008000;"><br></span><span style="color: #000000;">        e.printstacktrace();<br>    }<br>        <br>    }<br>    <br>}</span>