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Update java-concurrent-questions-03.md
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docs/java/concurrent/java-concurrent-questions-03.md

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@@ -308,7 +308,7 @@ public ScheduledThreadPoolExecutor(int corePoolSize) {
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`ThreadPoolExecutor`其他常见参数 :
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- `keepAliveTime`:线程池中的线程数量大于 `corePoolSize` 的时候,如果这时没有新的任务提交,核心线程外的线程不会立即销毁,而是会等待,直到等待的时间超过了 `keepAliveTime`才会被回收销毁。
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- `keepAliveTime`:当线程池中的线程数量大于 `corePoolSize` 的时候,即有非核心线程,这些非核心线程空闲时不会立即销毁,而是会等待,直到等待的时间超过了 `keepAliveTime`才会被回收销毁。
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- `unit` : `keepAliveTime` 参数的时间单位。
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- `threadFactory` :executor 创建新线程的时候会用到。
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- `handler` :拒绝策略(后面会单独详细介绍一下)。

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