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Thread: search for specific line in the file

  1. #1
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    Default search for specific line in the file

    Hello Friends
    While am reading a file in java i would like to print some specific lines like which shows the path and file name(eg :/ posaa/ file / hii.txt).
    it has to print the as many lines as it contains in the file.
    i think i have to search for the (//) slach charater and print the whole line.
    But am not sure donot know how to start .
    Please help on this.
    Thank you in advance


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    Default Re: search for specific line in the file

    Quote Originally Posted by Rajitha View Post
    ...how to start
    Well, if all you have to do is print all lines in the file that have a '/' character, then here is a way:

    1. Create a File object for the file name

    2. Create a Scanner object for the File object

    3. Make a loop that uses the Scanner nextLine() method to read
      each line of the file into a string.

    4. Use the String indexOf() method to determine whether that
      line contains the character '/' and print the line if it does.



    References:


    In addition to the Java API description in the above links, there are many on-line tutorials that demonstrate using these methods.

    What reference material are you using to learn Java from? Class notes? Textbook? What?

    Here's the reason I asked:

    Bottom line:
    If there were only one way to do things in Java (or anything else), it would be easy: Just discover the way or invent the way or get someone to show you the way and then get on with the rest of your life.

    The fact that there are many ways to do this specific task in Java means that meaningful help might depend on context: What have you learned (or are supposed to have learned) so far? What kind of programs have you written? Do you already know how to read lines of text from a file into a String? Stuff like that.


    Cheers!


    Z
    Last edited by Zaphod_b; July 16th, 2012 at 11:04 AM.

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