线程池工具

最新推荐文章于 2025-05-27 16:06:41 发布

原创最新推荐文章于 2025-05-27 16:06:41 发布 · 219 阅读

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CC 4.0 BY-SA版权

文章标签：

#多线程 #android #线程池

这篇博客探讨了Java中线程池的创建和使用，通过`ThreadUtil`类展示了如何实例化单线程ExecutorService。`MyRunnable`是抽象运行类，其子类`MyRunnableImpl`实现了延迟打印。博客中提交了多个任务到线程池执行，展示了任务的并发执行和清理机制。

package com.company;

import java.util.ArrayList;
import java.util.Deque;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class ThreadUtil {
    private List<Runnable> runnableList = new ArrayList<>();

    private ExecutorService executorService;
    private static ThreadUtil threadUtil;
    public static ThreadUtil newInstance(){
        if (null == threadUtil) {
            threadUtil = new ThreadUtil();
        }
        return threadUtil;
    }

    private ThreadUtil() {

        executorService = Executors.newSingleThreadExecutor();
    }

    public void submit(Runnable runnable){
        runnableList.add(runnable);
    }
    public void execute(){
        System.out.println(runnableList.size());
        if (runnableList.size() == 0) {

            return;
        }
        for (int i = 0; i< runnableList.size(); i++) {
            executorService.execute(runnableList.get(i));
        }
        runnableList.clear();
    }
}

//runnable的抽象类
package com.company;

abstract class MyRunnable implements Runnable{

    @Override
    public void run() {
        try {
            execute();
        }catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
    public abstract void execute();
}

===========================================================================

package com.company;

public class MyRunnableImpl extends MyRunnable {

    @Override
    public void execute() {
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("asdasd");
    }
}

==========================================================================

使用

ThreadUtil threadUtil = ThreadUtil.newInstance();
threadUtil.submit(new MyRunnableImpl());
threadUtil.submit(new MyRunnableImpl());
threadUtil.submit(new MyRunnableImpl());
threadUtil.execute();
threadUtil.execute();