WRITING AND READING TEXT FILES

    WRITING
   
        FileWriter myTextWriter = new FileWriter("myFileName.txt");
        BufferedWriter myWriteBuffer = new BufferedWriter(myTextWriter); 

        methods:  write() and newLine()

    READING

        FileInputStream myInputStream = new FileInputStream("myFileName.txt");
        Scanner myScanner = new Scanner(myInputStream);

        methods: hasNext(), hasNextInt(), nextInt(), etc.

WRITING AND READING DATA FILES

    WRITING

        FileOutputStream myStream = new FileOutputStream("myFileName.data");
        DataOutputStream myDataStream = new DataOutputStream(myStream);

        methods: writeDouble, writeInt, etc;

    READING

        File myFile = new File("myFileName.data");
             method: length
        FileInputStream myStream = new FileInputStream(myFile);
        DataInputStream myDataStream = new DataInputStream(myStream); 
             methods: readInt(), readDouble, etc.      


WRITING AND READING BYTE FILES

    WRITING

         FileOutputStream myStream = new FileOutputStream("myFileName.byte");
         method:  write(x), where x is an array of bytes

    READING

         File myFile = new File("myFileName.byte");
         long fileSize = myFile.length();
         byte[] x = new byte[fileSize];
         method: read(x);