is.read(buffer)

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is.read(buffer)
byte [] buffer = new byte[400];
int length = 0;
while(-1 = (length = is.read(buffer)))
{
os.write(buffer,0,400);
}

is应该是InputStream的缩写把,回去好好看看api read（bu f fer）中buffer是一个缓冲区把数据先读到内存中,然后write（bu f fer,0,400）写道OutputStream中,每次都是从buffer内存处的0偏移开始写,每次写400字节.

is.read(buffer) 解释 while(bytes_read = read(from_fd,buffer,BUFFER_SIZE)) ownership of the buffer is given over to the application. Buffer是什么意思? how is mr.read, my hobby is read Read this sentence is idiot Mr Read is a ( )(visit) 10x pcr buffer frame buffer size send buffer size translation lookaside buffer是什么意思