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Thread: acessing variabloe outside loop

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    Default acessing variabloe outside loop

    Hello,
    I have a programming assignment ive spent the better part of today working and I am having some trouble. I have to make a program that reads data from a text document containing employee information. After the information on the file is read the hours variable has to be added up. I cannot figure out how to get the hours to add up though. This is what I have so far.

    while(inputFile.hasNext())
    {
    hours = inputFile.nextInt();
    rate = inputFile.nextDouble();
    name = inputFile.nextLine();
    System.out.print(name);
    System.out.print(rate);
    System.out.println(hours);
    }
    This whileloop reads all the data in the text document and and prints it out on the screen. But when I try to add a totalHours variable inside the loop it prints out on every iteration of the loop. When I try to add a totalHours variable outside the loop it says the hours variable has not yet been declared. So how would I get the program to add up all the hours then print the total only once? Please help!


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    Administrator copeg's Avatar
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    Default Re: acessing variabloe outside loop

    If I understand correctly, you want a integer value from a String, from which you can add up. Use either the wrapper class for the number primitive you need, for example Integer.parseInt, to get that number value
    String value = "123";
    int intValue = 0;
    try{
        intValue = Integer.parseInt(value);
    }catch(NumberFormatException e){
        e.printStackTrace();
    }

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    Default Re: acessing variabloe outside loop

    This thread has been cross posted here:

    http://www.java-forums.org/new-java/41792-accessing-variable-loop.html

    Although cross posting is allowed, for everyone's benefit, please read:

    Java Programming Forums Cross Posting Rules

    The Problems With Cross Posting

    Duplicate post!


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    Default Re: acessing variabloe outside loop

    @copeg: Don't nextInt() extracts integer from the string and casts it to integer datatype?

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    Default Re: acessing variabloe outside loop

    Quote Originally Posted by Mr.777 View Post
    @copeg: Don't nextInt() extracts integer from the string and casts it to integer datatype?
    Thanks for the correction

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