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05/05/2009 at 02:39PM PDT, ID: 24383004
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8.6

How do I use a user input filename and then read line by line

Asked by mambofatale in Java Editors & IDEs

Tags: userinput BufferedInput

I am really new to Java and am feeling quite challenged at the moment!  :)

I need to allow the user to input the filename to read from, so I'm using a scanner:

 try{
            Scanner in = new Scanner(System.in);
            System.out.print("Enter name of input file: ");
            Scanner input=new Scanner(new FileReader(in.nextLine()));

            if(!input.hasNext())
            {System.out.println("File Empty - aborting");
            System.exit(0);}
            while (input.hasNextLine())
            {

After reading the input file, I need to count the characters and output the number of chars per line into a text file (so the number of lines in the source file will match the output file).  I think I need to use BufferedInputStream to read it line by line, but I'm not sure how to use it with the scanner, or if what I have above is good enough.  All the examples I have found used a static file name with BufferedInputStream.

Thanks!!!
[+][-]05/05/09 03:38 PM, ID: 24309842

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Zone: Java Editors & IDEs
Tags: userinput BufferedInput
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Solution Provided By: objects
Participating Experts: 1
Solution Grade: A
 
 
[+][-]05/06/09 01:06 PM, ID: 24319066

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[+][-]05/06/09 05:30 PM, ID: 24321327

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[+][-]09/29/09 08:39 PM, ID: 25455476

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