Question

I don’t understand why Eclipse is giving me an error regarding passing the String returned by the BufferedReader into Hashtable’s put(Object,Object) method. I’ve read the API, I don’t recognise any clues. Is it perhaps that it cannot be sure that it will return a unique String?

The String dictionary is set elsewhere in the file,I’ve stripped this down to the bit that matters – the method in question & anything happening with its variables.

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

public class Model {
     private Hashtable hash=new Hashtable();
     private String dictionary;

     public void loadWords() throws IOException{
        BufferedReader br=null;

        try{        
            br=new BufferedReader(new FileReader(dictionary));
            do{
                hash.put(br.readLine(), new Node<E>);
            }
            while(br.readLine()!=null);

        }catch(IOException iOE){
            System.out.println("Fission mailed");
        }
        finally{
            br.close(); // Closing the buffered reader
        }
    }

Answer 1

It looks like it’s not problem with key it is problem with value part.
You can not add new Node<E> this as a Value. It must have specific type like new Node<String>() or new Node<Integer>().