Question

I get an error in my code, here is the prompt and code along with the error.

Write a spell checking program (java) which uses a dictionary of words (input by the user as a string) to find misspelled words in a second string, the test string. Your program should prompt the user for the input string and the dictionary string. A valid dictionary string contains an alphabetized list of words.

Functional requirements:

1. For each word in the input string, your program should search the dictionary string for the given word. If the word is not in the dictionary, you program should print the message "Unknown word found" to standard output.
2. After traversing the entire input string, your program should print a message describing the total number of misspelled words in the string.
3. A dictionary string may contain words in uppercase, lowercase, or a mixture of both. The test string may also combine upper and lower case letters. You program should recognize words regardless of case. So if "dog" is in the dictionary string, the word "dOG" should be recognized as a valid word. Similarly, if "CaT" is in the dictionary string, the word "cat" she be recognized as a valid word.
4. Within a string, a word is a white-space delimited string of characters. So the last word in "Hello world!" is "world!".

CODE:

dictionary.java

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

public class dictionary
{
public static void main(String args[]) throws Exception
{
     
  
   String dString;
   String uString;
  
   Scanner input=new Scanner(System.in);
  
   System.out.println("Enter distionary string :");
  
   dString = input.nextLine();
  
   System.out.println("Enter input string :");
  
   uString = input.nextLine();
  
   String[] dict = dString.split(" ");//split dictionay string and save to array fo string
  
   boolean found = false;
  
   //ieterate over dictionary string array
   for (String a : dict)
   {
       //compare and print message accordingly       
       if((uString.toLowerCase().compareTo(a.toLowerCase())) == 0)
       {
   System.out.println("word found!");
           found = true;
           break;
       }
   }
  
   if(found == false)
   {
       System.out.println("Unknown word found!");
   }
  
  
  
}
}

ERROR:

Main.java:4: error: class dictionary is public, should be declared in a file named dictionary.java
public class dictionary
^
1 error
compiler exit status 1

Answer 1

/* First save the class as dictionary.java
* The program prompts user to enter the dictionary string and then prompt input string to search in the previous dictionary
* string. If the input string is found then print the input string is found otherwise print unknown word found.
* */
//dictionary.java
import java.util.Scanner;
public class dictionary
{
   public static void main(String args[]) throws Exception
   {
       String dString;
       String uString;
       Scanner input=new Scanner(System.in);

       System.out.println("Enter distionary string :");
       dString = input.nextLine();
       System.out.println("Enter input string :");
       uString = input.nextLine();
       String[] dict = dString.split(" ");//split dictionay string and save to array fo string
       boolean found = false;
       //ieterate over dictionary string array
       for (String a : dict)
       {
           //compare and print message accordingly     
           if((uString.toLowerCase().compareTo(a.toLowerCase())) == 0)
           {
               System.out.println("word found!");
               found = true;
               break;
           }
       }
      
       if(found == false)
       {
           System.out.println("Unknown word found!");
       }
   }
}

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Sample Output:

Enter distionary string :
watch seeing
Enter input string :
watch
word found!