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import java.util.concurrent.Ar

[单选题]

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
public class Main {
    public static void main(String[] args) {
        ThreadPoolExecutor executor = new ThreadPoolExecutor(5, 10, 15, TimeUnit.SECONDS,
                new ArrayBlockingQueue<Runnable>(5), new ThreadPoolExecutor.CallerRunsPolicy());
    }
}
线程池executor在空闲状态下的线程个数是？

```
0
```
```
5
```
```
10
```
```
不确定
```

查看正确选项

HereNowMe

空闲状态下的非核心线程数呢？非核心线程不是15秒后才kill吗？

发表于 2019-02-11 23:38:06 回复(1)

AppleJack

public class Main {
    public static void main(String[] args) {
        ThreadPoolExecutor executor = new ThreadPoolExecutor(5, 10, 15, TimeUnit.SECONDS,
                new ArrayBlockingQueue<Runnable>(5), new ThreadPoolExecutor.CallerRunsPolicy());
    }

}

前三个参数：核心线程有5个，最大线程数是10个，keepAliveTime是15s，如果线程池中的线程大于5，那么超15s的空闲线程就会被结束，也就是说，一定会保持5个线程不会被结束。当所有任务完成后，会保持5个空闲的线程

发表于 2019-02-21 11:11:22 回复(1)