Why do I keep getting the “must be caught or declared to be thrown” error? [closed]

Answer 1

In the method getString() You are creating a new File(), which throws FileNotFoundException. This FileNotFoundException must be caught by enclosing the scanner code block with in the try-catch block or declared thrown by the method. Same thing applies to the putString (String finalString) method.

Your code should be

static String getString(){
        Scanner input;
        try {
            input = new Scanner(new File(" "));
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        String codeString = input.next();
        return codeString;
    }

static void putString (String finalString){
        PrintWriter work;
        try {
            work = new PrintWriter("EncryptedDocument.txt");
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        work.print(finalString + " ");
        work.close();
    }