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Java I/O Streams (Data Stream (definition (binary I/O (primitive, String),…

- - - - primitive
      - String
    - - for each datatype
  - - - DataInputStream
        (class)
    - - DataOutputStream
        (class)
- - - - access kernel when buffer is empty/full
  - - - BufferedReader
        (class)
    - - BufferedWriter
        (class)
      - PrintWriter
        (class)
        
        flush buffer every println/format
- - - - then translate to datatypes
      - uses whitespace to separate tokens
      - .useDelimiter() specify delimiter
- - - - serializable objects
      - primitives
    - - initial object
        
        reference objects
        
        only transferred once
  - - - ObjectInputStream
        (class)
    - - ObjectOutputStream
        (class)
- - - - most primitive I/O
    - - avoid resource leaks
  - - - FileInputStream
        (class)
    - - FileOutputStream
        (class)
- - - - uses bytestream for physical I/O
      - then translates byte to char
  - - - FileReader
        (class)
    - - FileWriter
        (class)
- - - - PrintWriter - char
      - PrintStream - byte
        
        System.err
        
        System.out
    - - .println()
      - .print()
      - .format()
  - - - .out, .err, .in