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newCachedThreadPool笔记

关键词: newCachedThreadPool

newCachedThreadPool笔记

```
package com.demo.other;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class A {

static CountDownLatch countDownLatch = new CountDownLatch(2);

public static void main(String[] args) {
        long s = System.currentTimeMillis();
        ExecutorService cachedThreadPool = Executors.newCachedThreadPool();
        cachedThreadPool.execute(() -> {
            System.out.println(req1());
            countDownLatch.countDown();
        });
        cachedThreadPool.execute(() -> {
            System.out.println(req2());
            countDownLatch.countDown();
        });
        try {
            countDownLatch.await();
        } catch (Exception ignored) {

}
        long e = System.currentTimeMillis();
        long span = e - s;
        System.out.println("全部结束，耗时" + span + "毫秒");
    }

public static String req1() {
        try {
            Thread.sleep(3000);
        } catch (Exception ignored) {

}
        return "r1";
    }

public static String req2() {
        try {
            Thread.sleep(1000);
        } catch (Exception ignored) {

}
        return "r2";
    }

}
```

admin
2022-05-24 23:17:48
phantoscope

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newCachedThreadPool笔记