Java I/O Streams

• Text output:

    PrintWriter out = 
      new PrintWriter( 
        new OutputStreamWriter( 
          new FileOutputStream( filename ) ) );   // a byte stream
  

  or

    PrintWriter out =
      new PrintWriter( 
        new FileWriter( filename ) );             // a character stream
  

• Buffered text output:

    BufferedWriter out = 
      new BufferedWriter( 
        new OutputStreamWriter( 
          new FileOutputStream( filename ) ) );   // a byte stream
  

  or

    BufferedWriter out = 
      new BufferedWriter( 
        new FileWriter( filename ) );             // a character stream
  

• Text input:

    RandomAccessFile in = new RandomAccessFile( filename, "r" );
  

• Buffered text input:

    BufferedReader in = 
      new BufferedReader( 
        new InputStreamReader( 
          new FileInputStream( filename ) ) );    // a byte stream
  

  or

    BufferedReader in = 
      new BufferedReader( 
        new FileReader( filename ) );             // a character stream
  

• Binary output:

    DataOutputStream out = 
      new DataOutputStream( 
        new FileOutputStream( filename ) );       // a byte stream
  

• Buffered binary output:

    BufferedOutputStream out = 
      new BufferedOutputStream( 
        new FileOutputStream( filename ) );       // a byte stream
  

• Binary input:

    DataInputStream in = 
      new DataInputStream( 
        new FileInputStream( filename ) );        // a byte stream
  

• Buffered binary input:

    BufferedInputStream in = 
      new BufferedInputStream( 
        new FileInputStream( filename ) );        // a byte stream