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Thread: Need help with assignment (File Input and Ouput, Encoder)

  1. #1
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    Default Need help with assignment (File Input and Ouput, Encoder)

    Create an encode/decode program. This program will have two methods (or two classes) that use the FileWriter/FileReader and BufferedWriter/BufferedReader. The first class/method will write an encoded message to an output file call “codedmessage.txt”, e.g., you could shift the letters of the alphabet by one [hello=ifmmp]. The encoded massage should be a least ONE SENTENCE in length (minimum of 50 characters). The second class/method will read in the contents of the encode file and decode the encoded message.

    Proposed marking scheme:
    • Use of FileWriter and BufferedWriter to output file [10 marks]
    • Simple encryption applied to text before writing [10 marks]
    • Read in file using FileReader and BufferedReader [10 marks]
    • Use of methods and/or separate classes for I/O [10 marks]
    This is our question, only problem is I have been away on holidays the last two weeks and got caught behind on my java and I havn't even started on these file writer/filereader imports and don't really know what I'm doing here, tried reading the college notes but I got even more confused, if anyone can explain how I can get started on this would be very appreciated

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Need help with assignment (File Input and Ouput, Encoder)

    It looks like there are two things you need to do:
    Write and read a file.
    encode and decode a String

    Work on each part separately and then merge the code.

    What questions or problems are you having with these?
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Jul 2010
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    Default Re: Need help with assignment (File Input and Ouput, Encoder)

    As a helpful reference to you, here are some links to the APIs your project mentions:

    And just in case, here is the String API: String (Java Platform SE 6)

    When asking for help, please follow these guidelines to receive better and more prompt help:
    1. Put your code in Java Tags. To do this, put [highlight=java] before your code and [/highlight] after your code.
    2. Give full details of errors and provide us with as much information about the situation as possible.
    3. Give us an example of what the output should look like when done correctly.

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