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Thread: Can't compile classes due to exception problems

  1. #1
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    Default Can't compile classes due to exception problems

    These are the error messages that shows up when I try to compile it:
    Main.java:16: error: unreported exception FileNotFoundException; must be caught or declared to be thrown
    FileReader fr = new FileReader ("a.txt"); /*thrown FileNotFoundException;*/
    ^
    Main.java:18: error: unreported exception IOException; must be caught or declared to be thrown
    fr.close();
    ^
    Here is my code
    import java.util.Scanner;
    import java.util.List;
    import java.io.BufferedReader;
    import java.io.FileReader;
     
     
    public class Main {
      public static void main (String [] args) {
        String configurationFile = "a.txt";
        FileReader fr = new FileReader ("a.txt"); /*thrown FileNotFoundException;*/
        BufferedReader br = new BufferedReader (fr);
        fr.close();
      }
    }

    Thanks for any input


  2. #2
    Senile Half-Wit Freaky Chris's Avatar
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    Default Re: Can't compile classes due to exception problems

    Have a look at the following page which discuss the use of exceptions

    Lesson: Exceptions (The Java™ Tutorials > Essential Classes)

    How to throw and catch them for example. You need to be catching these exceptions as they are checked exceptions, this means you cannot compile without handling these in one way or another.

    Chris
    chris[at]javaprogrammingforums[dot]com

    Prifysgol Bangor University, North Wales

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