Flow overview :

stay java in , Different input and output sources are operated in the form of streams ( input , output ), Flow is an abstract description , A transfer method of representing data in a program

Jdk Different streams are provided to handle different input and output sources , According to the flow properties, it can be divided into the following types :

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By flow direction ( From the perspective of procedure )

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Input stream (input)

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Output stream (output)

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By type :

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Byte stream (InputStream/OutputStream)

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Any file can be transferred through a byte stream .

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Character stream (Reader/Writer)

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Non plain text file , Cannot use character stream , Can cause file format corruption , Can't execute normally .

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Node flow ( Low level flow : Direct docking with input and output sources )

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FileInputStream/FileOutputStream/FileReader/FileWriter/PrintStream/PrintWriter.

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Process flow ( Advanced flow : Based on low-level flow )

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Conversion flow :InputStreamReader/OutputStreamWriter, Byte flow character stream / Character flow byte stream

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Buffer stream :BufferedInputStream/BufferedOutputStream  
BufferedReader/BufferedReader Nodes can be wrapped in rows , Make reading and writing faster

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