java_高级知识点

目录

 

 高级知识点

外部排序分析

多线程

线程池

资源管理

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 高级知识点

外部排序分析

 

多线程

 

线程池

public class ExecutorTester {

  public static void main(String[] args)
          throws InterruptedException, ExecutionException {

    ExecutorService executor = Executors.newFixedThreadPool(3);

    List> taskResults = new LinkedList<>();

    for (int i = 0; i < 10; i++) {
      taskResults.add(executor.submit(new CodingTask(i)));
    }
    System.out.println("10 tasks dispatched successfully.");

    for (Future taskResult : taskResults) {
      taskResult.get();
      System.out.println("null");
    }

    System.out.println("All tasks finished.");
    executor.shutdown();
  }
}

资源管理