package cse1030;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;

public class Dictionary {
  private HashSet<String> words;

  public Dictionary(String filename) throws IOException {
    HashSet<String> wordsFromFile = new HashSet<String>();
    BufferedReader r = null;
    try {
      r = new BufferedReader(new FileReader(filename));
      boolean done = false;
      do {
        String word = r.readLine();
        if (word != null) {
          wordsFromFile.add(word.trim());
        } else {
          done = true;
        }
      } while (!done);
      this.words = wordsFromFile;
    } catch (IOException ex) {
      throw ex;
    }
    finally {
      if (r != null) {
        r.close();
      }
    }
  }
  
  public boolean lookUp(String word) {
    return this.words.contains(word);
  }
}