java - 将任务添加到执行器

Question

我编写了一个内部类CreateRecord用于创建Record实例。稍后当调用create方法时将其作为任务提交给执行器。我是否必须每次都创建一个内部类来表示要执行的任务(例如deleteRecord，updateRecord)。谁能建议一个更好的方法。

 ExecutorService exec=new ThreadPoolExecutor(corePoolSize,maxPoolSize,
         keepAlive,TimeUnit.MINUTES,new LinkedBlockingQueue<Runnable>());

    public void create(String str ) throws RemoteException
    {
      exec.execute(new CreateRecord(str));
    }

    class CreateRecord implements Runnable
    {
      private String Id;
      public  CreateRecord(String Id)
      {
        this.Id=Id;
      }

      @Override
      public void run() 
      {

        System.out.println("Record creation in progress of: "+Id+
              " by thread: "+Thread.currentThread().getName());
        Record rec=new Record(Id);
        map.put(Id, rec);
      }
    }

Answer 1

您可以只实例化一个Runnable，而不是声明一个新类。这些在 Java 中称为匿名内部类。

public void create(final String id) throws RemoteException
{
    exec.execute(new Runnable()
    {
        @Override
        public void run() 
        {
            System.out.println("Record creation in progress of: "+id+" by thread: "+Thread.currentThread().getName());
            Record rec=new Record(id);
            map.put(id, rec);
        }
    });
}