CODEWITHSUNDEEP
javafile
Layla
Layla

Reputation: 5446

reading a file in Java, it does not find the file

I have coded the following for reading a txt in Java:

public static void main(String[] args) throws FileNotFoundException, IOException {
    // TODO code application logic here
    String name;
    String line;
    System.out.println("Input file name");
    Scanner inp=new Scanner(System.in);
    name=inp.nextLine();  
    FileReader file=new FileReader(name);
    BufferedReader br=new BufferedReader(new FileReader(name));
    while((line=br.readLine())!=null){
        System.out.println(br.readLine());
    }
    br.close();
}

I have a txt file that is under the same folder of my java code, its name is data.txt (which contains a list of numbers line by line), the problem that I got is that when I run this I got the following message:

Exception in thread "main" java.io.FileNotFoundException: data.txt (The system cannot find the file specified)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(FileInputStream.java:138)
    at java.io.FileInputStream.<init>(FileInputStream.java:97)

where is the mistake? also how I can surround it with a try catch block in case the file does not exist?

I have put the System.out.println(new File(name).getAbsoluteFile); and it appears all the path thru data.txt, but I want to point by default to my current folder; should I use Scanner?

Upvotes: 0

Views: 5472

Answers (2)

user2277872
user2277872

Reputation: 2973

If youre using a scanner, you need to use the File

    Scanner inp=new Scanner(System.in);
    name=inp.nextLine();  

    File file = new File(name);

    if(file.exists()) {
     try {
         FileReader file=new FileReader(name);
         BufferedReader br=new BufferedReader(new FileReader(name));
         while((line=br.readLine())!=null){
            System.out.println(br.readLine());
         }
         br.close();
      }
      catch(IOException e) {
        System.out.println(e.getMessage());
       }
    }

that should help, hope it does :)

Upvotes: 0

Paul Samsotha
Paul Samsotha

Reputation: 208944

If you want to use the relative file name and you're running from an IDE like netbeans or eclipse, you file structure should look something like this

ProjectRoot
         file.txt
         src
         build

file.txt being the relative path you're using. The IDE will first search the Project root for the file if no other directories are specified in the file path.

Upvotes: 4

Related Questions