写一个java线程池代码
时间: 2023-03-13 10:07:00 浏览: 61
Java线程池代码的例子如下:import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;public class ThreadPoolExample {
public static void main(String[] args) {
ExecutorService executor = Executors.newFixedThreadPool(5); for (int i = 0; i < 10; i++) {
Runnable worker = new WorkerThread("" + i);
executor.execute(worker);
}
executor.shutdown();
while (!executor.isTerminated()) {
}
System.out.println("Finished all threads");
}
}
相关问题
用java写一个线程池代码
好的,以下是一个简单的 Java 线程池的实现代码,供您参考:
```java
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class ThreadPoolDemo {
public static void main(String[] args) {
ExecutorService threadPool = Executors.newFixedThreadPool(3);
for (int i = 1; i <= 10; i++) {
final int task = i;
threadPool.execute(new Runnable() {
@Override
public void run() {
System.out.println(Thread.currentThread().getName() + " 执行了任务 " + task);
}
});
}
threadPool.shutdown();
}
}
```
该代码创建了一个固定大小为 3 的线程池,然后提交了 10 个任务,每个任务都会打印出当前线程的名称和任务编号。最后调用 `shutdown()` 方法关闭线程池。
帮我用java写个线程池代码
好的,以下是一个简单的 Java 线程池代码:
```java
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class ThreadPoolExample {
public static void main(String[] args) {
ExecutorService executor = Executors.newFixedThreadPool(5); //创建线程池
for (int i = 0; i < 10; i++) {
Runnable worker = new WorkerThread("" + i);
executor.execute(worker); //执行任务
}
executor.shutdown(); //关闭线程池
while (!executor.isTerminated()) {
}
System.out.println("Finished all threads");
}
}
class WorkerThread implements Runnable {
private String message;
public WorkerThread(String s) {
this.message = s;
}
public void run() {
System.out.println(Thread.currentThread().getName() + " (Start) message = " + message);
processMessage();
System.out.println(Thread.currentThread().getName() + " (End)");
}
private void processMessage() {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
```
这个例子中,我们使用 `Executors.newFixedThreadPool(5)` 创建了一个固定大小为 5 的线程池。然后,我们使用 `executor.execute(worker)` 方法来提交任务给线程池执行。在我们的例子中,我们提交了 10 个任务。最后,我们调用 `executor.shutdown()` 方法来关闭线程池,并使用 `executor.isTerminated()` 方法来检查线程池中的所有任务是否都执行完毕。