其构造方法为
public class ThreadPoolExecutor extends AbstractExecutorService{<span style="white-space:pre"> </span><div class="line number3 index2 alt2" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background: none rgb(244, 244, 244) !important;"><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;"> public</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">ThreadPoolExecutor(</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">int</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">corePoolSize,</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">int</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">maximumPoolSize,</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">long</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">keepAliveTime,TimeUnit unit,</code></div><div class="line number4 index3 alt1" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background-image: none !important; background-attachment: initial !important; background-size: initial !important; background-origin: initial !important; background-clip: initial !important; background-position: initial !important; background-repeat: initial !important;"><code class="java spaces" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;"> </code><code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">BlockingQueue<Runnable> workQueue);</code></div><div class="line number6 index5 alt1" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background-image: none !important; background-attachment: initial !important; background-size: initial !important; background-origin: initial !important; background-clip: initial !important; background-position: initial !important; background-repeat: initial !important;"><code class="java spaces" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;"> </code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">public</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">ThreadPoolExecutor(</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">int</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">corePoolSize,</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">int</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">maximumPoolSize,</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">long</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">keepAliveTime,TimeUnit unit,</code></div><div class="line number7 index6 alt2" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background: none rgb(244, 244, 244) !important;"><code class="java spaces" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;"> </code><code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">BlockingQueue<Runnable> workQueue,ThreadFactory threadFactory);</code></div><div class="line number8 index7 alt1" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background-image: none !important; background-attachment: initial !important; background-size: initial !important; background-origin: initial !important; background-clip: initial !important; background-position: initial !important; background-repeat: initial !important;"> </div><div class="line number9 index8 alt2" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background: none rgb(244, 244, 244) !important;"><code class="java spaces" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;"> </code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">public</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">ThreadPoolExecutor(</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">int</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">corePoolSize,</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">int</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">maximumPoolSize,</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">long</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">keepAliveTime,TimeUnit unit,</code></div><div class="line number10 index9 alt1" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background-image: none !important; background-attachment: initial !important; background-size: initial !important; background-origin: initial !important; background-clip: initial !important; background-position: initial !important; background-repeat: initial !important;"><code class="java spaces" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;"> </code><code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">BlockingQueue<Runnable> workQueue,RejectedExecutionHandler handler);</code></div><div class="line number11 index10 alt2" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background: none rgb(244, 244, 244) !important;"> </div><div class="line number12 index11 alt1" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background-image: none !important; background-attachment: initial !important; background-size: initial !important; background-origin: initial !important; background-clip: initial !important; background-position: initial !important; background-repeat: initial !important;"><code class="java spaces" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;"> </code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">public</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">ThreadPoolExecutor(</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">int</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">corePoolSize,</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">int</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">maximumPoolSize,</code><code class="java keyword" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; color: rgb(0, 0, 255) !important; background: none !important;">long</code> <code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">keepAliveTime,TimeUnit unit,</code></div><div class="line number13 index12 alt2" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important; white-space: nowrap !important; background: none rgb(244, 244, 244) !important;"><code class="java spaces" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;"> </code><code class="java plain" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace !important; min-height: inherit !important; background: none !important;">BlockingQueue<Runnable> workQueue,ThreadFactory threadFactory,RejectedExecutionHandler handler);</code></div>}corePoolSize:保留的线程池大小
maximumPoolSize:线程池的最大大小
keepAliveTime:空闲线程结束的超时时间
unit 是一个枚举，表示 keepAliveTime 的单位。
workQueue 表示存放任务的队列。
线程池的工作过程如下:
1、线程池刚创建时，里面没有一个线程。任务队列是作为参数传进来的。不过，就算队列里面有任务，线程池也不会马上执行它们。
2、当调用 execute() 方法添加一个任务时，线程池会做如下判断：
a. 如果正在运行的线程数量小于 corePoolSize，那么马上创建线程运行这个任务；
b. 如果正在运行的线程数量大于或等于 corePoolSize，那么将这个任务放入队列。
c. 如果这时候队列满了，而且正在运行的线程数量小于 maximumPoolSize，那么还是要创建线程运行这个任务；
d. 如果队列满了，而且正在运行的线程数量大于或等于 maximumPoolSize，那么线程池会抛出异常，告诉调用者“我不能再接受任务了”。
3、当一个线程完成任务时，它会从队列中取下一个任务来执行。
4、当一个线程无事可做，超过一定的时间（keepAliveTime）时，线程池会判断，如果当前运行的线程数大于 corePoolSize，那么这个线程就被停掉。所以线程池的所有任务完成后，它最终会收缩到 corePoolSize 的大小。
这样的过程说明，并不是先加入任务就一定会先执行。假设队列大小为 10，corePoolSize 为 3，maximumPoolSize 为 6，那么当加入 20 个任务时，执行的顺序就是这样的：首先执行任务 1、2、3，然后任务 4~13 被放入队列。这时候队列满了，任务 14、15、16 会被马上执行，而任务 17~20 则会抛出异常。最终顺序是：1、2、3、14、15、16、4、5、6、7、8、9、10、11、12、13。下面是一个线程池使用的例子：
public static void main(String[] args) {
BlockingQueue queue = new LinkedBlockingQueue();
ThreadPoolExecutor executor = new ThreadPoolExecutor(3, 6, 1, TimeUnit.DAYS, queue);
for(int i = 0; i < 20; i++) {
executor.execute(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(String.format("thread %d finished", this.hashCode()));
}
});
}
executor.shutdown();
}