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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ### Buffer緩沖區 Buffer是一個對象,包含一些要寫入或者要讀出的數據;NIO庫中所有數據都是用緩沖區處理; 緩沖區實際上是一個數組\(通常是一個字節數組ByteBuffer\); ByteBuffer缺點 ![](https://img.kancloud.cn/02/dd/02dd7827a21e547c9b7990934bb7788b_642x171.png) Buffer是所有具體緩存區的基類,是一個抽象類,它的實現類有很多,包含各種類型數據的緩存 * ByteBuffer * CharBuffer * ShortBuffer * IntBuffer * LongBuffer * FloatBuffer * DoubleBuffer * MappedByteBuffer ### Channel通道 channel是全雙工的; ![](https://img.kancloud.cn/1b/3f/1b3f7f2f546dc639e902a43dfd3eef6d_721x111.png) 類圖: ![](https://img.kancloud.cn/8f/6d/8f6db5ae060c9982249344d051db9e66_671x462.png) 基本的通道類型有如下一些: * FileChannel * DatagramChannel * SocketChannel * ServerSocketChannel FileChannel 是基于文件的通道,SocketChannel 和 ServerSocketChannel 用于網絡 TCP 套接字數據報讀寫,DatagramChannel 是用于網絡 UDP 套接字數據報讀寫; 通道不能單獨存在,它永遠需要綁定一個緩存區,所有的數據只會存在于緩存區中,無論你是寫或是讀,必然是緩存區通過通道到達磁盤文件,或是磁盤文件通過通道到達緩存區; ### Selector多路復用器 ![](https://img.kancloud.cn/b8/e3/b8e30f132229dddbc9b44571cdd6981f_666x80.png) ![](https://img.kancloud.cn/97/59/975924f2c1ef47d6cfab2ad409b7472b_673x115.png)
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                              哎呀哎呀视频在线观看