java线程池赏析

1、线程池的顶级接口（Executor）

线程池的顶级接口（jdk > 1.5）。仅仅定义了方法execute(Runnable)。

该方法接收一个Runnable实例，用来执行一个任务，该任务即是一个实现Runnable接口的类。

 

public interface Executor {

    /**
     * Executes the given command at some time in the future.  The command
     * may execute in a new thread, in a pooled thread, or in the calling
     * thread, at the discretion of the <tt>Executor</tt> implementation.
     *
     * @param command the runnable task
     * @throws RejectedExecutionException if this task cannot be
     * accepted for execution.
     * @throws NullPointerException if command is null
     */
    void execute(Runnable command);
}

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