通过JMF，调用windows自带的录音硬件，可以实现声音的录制播放，暂停，快进快退等功能。(Through the JMF, call the windows built-in recording hardware can achieve sound recording, playback, pause, fast forward and rewind functions.)

java api.API（Application Programming Interface,应用程序编程接口）是一些预先定义的函数，目的是提供应用程序与开发人员基于某软件或硬件的以访问一组例程的能力，而又无需访问源码，或理解内部工作机制的细节(java api,a predefined function that provides the ability for applications and developers to access a set of routines based on a

一些基础的Hadoop的应用Demo，主要适用于初学者学习(Hadoop implements a Distributed File System (Hadoop Distributed File System), or HDFS. HDFS features high fault tolerance and is designed to be deployed on low-cost hardware. And it provides high throughput to access app

虚拟机是一种抽象化的计算机，通过在实际的计算机上仿真模拟各种计算机功能来实现的。Java虚拟机有自己完善的硬体架构，如处理器、堆栈、寄存器等，还具有相应的指令系统。Java虚拟机屏蔽了与具体操作系统平台相关的信息，使得Java程序只需生成在Java虚拟机上运行的目标代码（字节码），就可以在多种平台上不加修改地运行。(Virtual machine is an abstract computer, which is realized by simulating various computer f