Java NIO
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liangcmwn commented
- flip() 读模式变为写模式,limit=current,position=0,mark=null
- rewind() 用于重复读 position=0
- clear() 清空,position=0, limit=capacity
- compact() 未读内容拷贝到头部
- mark(), 标记位置 mark=position,
- reset 重置 position = mark
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