##代码示例
MyTest.java package myUtil.myUtil; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * * 自我感觉最实用的线程，固定长度线程池总结 *以及优点 */ public class MyTest{ private static final Logger logger = LoggerFactory .getLogger(MyTest.class); public static void main(String[] argv){ //创建线程本地变量 ThreadLocal<String> threadLocal = new ThreadLocal<String>(); /*创建可用线程数量的固定线程池*/ ExecutorService executorService = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors()); executorService.execute(new Runnable() {//向线程池中添加线程 @Override public void run() {//一定要捕获子线程异常，不然它出轨了都不知道 try { } catch (Exception e) { } } }); executorService.shutdown();//一定要调用这个方法，不然executorService.isTerminated()永远不为true while(true){//等待所有任务都结束了继续执行 try { if(executorService.isTerminated()){ System.out.println("所有的子线程都结束了！"); break; } Thread.sleep(1000); }catch (Exception e){ e.printStackTrace(); } } } }