Question

Java Programming: spellcheck

Write code to read in a dictionary from the current directory called "dict.txt" (you can find this in the current directory/data)

Add each word to a hash map after splitting words and throwing away punctuation (see the demo).

open a file called "spell.txt" to check in the current directory.

Print out every word in spell.txt that is NOT in the dictionary.

Example:

if spell.txt contains:

hello, this is a test. 2152189u5
Misspelled! cApitalized

The output should be:
2152189u5
Misspelled
cApitalized

Answer 1

import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Map.Entry;

public class SpellCheck {

    private static HashMap<String, String> readWords(String fileName) throws IOException {

        var lines = Files.readAllLines(Paths.get(fileName), StandardCharsets.UTF_8);
        var itr = lines.iterator();
        var map = new HashMap<String, String>();

        while (itr.hasNext()) {
            var words = itr.next().split("\\W");
            for (String word : words) {
                if (!map.containsKey(word))
                    map.put(word.toLowerCase(), word);
            }
        }
        
        return map;
    }

    public static void main(String[] args) throws IOException {

        var dictWords = readWords("dict.txt");
        var fileWords = readWords("spell.txt");

        for (Entry<String, String> word : fileWords.entrySet()) {
            if(!dictWords.containsKey(word.getKey()))
                System.out.println(word.getValue());
        }
    }
}

Contect of dict.txt

hello, this is a sample test dictionary.

Content of spell.txt

hello, this is a test. 2152189u5 Misspelled! cApitalized

Output

cApitalized 2152189u5 Misspelled

Code with sample input output.