How do I get this loop to work? filein Unresolved

July 20, 2022

I have this snippet, and I want to know how I could traverse through the tokens of this file. As you can see, I read it with a Scanner, and I have infile as unresolved. It is understandable since infile is a Scanner, I mean, an object, but then how do I make that loop traverse the File? The idea is to read the contents of the file, which contains several words, convert each word to lowercase and put them all in a HashSet.

import java.io.File;
import java.util.*;

public class CheckSpelling{
    
    public static void main(String[] args) {
        //Create HashSet to store our data.
        HashSet<String> words = new HashSet<String>();
        
        try {
            //Read file words.txt
            Scanner filein = new Scanner (new File("/classes/s09/cs225/words.txt"));
                }
            catch(Exception e) {
                e.printStackTrace();
            }
        
        //While there exists another word next...
        while (filein.hasNext()) {
        //Go to next word 
            String tk = filein.next();
        //Convert that word into lower case... 
            tk.toLowerCase(); 
        //add the word to our collection of data. 
            words.add(tk);
            }    
        }
    }

You put this in a java class and it will yield infile as unresolved. Please help me get over this. Let me know if you have an issue reproducing the Exception.

Thanks in advance.

>Solution :

Thats the solution:
You just had to correct the brackets.

 public static void main(String[] args) {
            //Create HashSet to store our data.
            HashSet<String> words = new HashSet<String>();
    
            try {
                //Read file words.txt
                Scanner filein = new Scanner (new File("your path"));
                //While there exists another word next...
                while (filein.hasNext()) {
                    //Go to next word
                    String tk = filein.next();
                    //Convert that word into lower case...
                    tk.toLowerCase();
                    //add the word to our collection of data.
                    words.add(tk);
                }
            }
            catch(Exception e) {
                e.printStackTrace();
            }
    }