Wsrtjtyk

I am a beginner programmer and am trying to figure out what is wrong with my code. How can I fix my mistakes? This is the code I could type out so far. This is pretty similar to the game "Word Ladder". I keep getting this error and cannot understand how to fix this:

OneLetterGame.java:67: error: incompatible types: possible lossy conversion from int to char:   charArray[0] = index ;

Code:

import javax.swing.*;

import java.util.Scanner;

import java.io.*;





public class OneLetterGame {

 public static void main(String args) {

  String startWord = "";

  String currentWord = "";

  String goalWord = "";

  String error = "";

  char newLetter = '';

  int index = 0;

  int steps = 0;



     do {

   String fileContents = getFileContents("dictionary.txt");



   startWord = JOptionPane.showInputDialog(error + "Player One, please enter a FOUR letter word: ");



   if (startWord == null) {

    //exits program if user selects "cancel"

    System.exit(0);

   } //if



   currentWord = startWord;



   /* for(int i = 0; i < fileContents.length;i++){

    if(currentWord.equals(fileContents[i]){

        break;

    }else{

        error = "This is not a valid four letter word. Please try again. n";

        continue;

    }   



}//for */



   System.out.println(startWord);



   goalWord = JOptionPane.showInputDialog("Player Two, please enter a FOUR letter GOAL word: ");



   if (goalWord == null) {

    //exits program if user selects "cancel"

    System.exit(0);

   } //if                                               



   steps++;



   //user enters step has form index space letter

   currentWord = JOptionPane.showInputDialog("Please enter the letter you want to change and its location (ex: 1 a) n The Goal Word is " + goalWord + " :");



   if (currentWord == null) {

    //exits program if user selects "cancel"

    System.exit(0);

   } //if



   //pulls out character at index 0

   index = currentWord.charAt((int) 0 - 48);

   //pulls out character at index 3

   newLetter = currentWord.charAt(3);



   //string to char

   char charArray;

   charArray = currentWord.toCharArray();



   charArray[0] = index;

   charArray[3] = newLetter;

   currentWord = String.valueOf(charArray);



   //char to string

   currentWord = new String(charArray);



   System.out.println(currentWord);







   if (currentWord.equals(goalWord)) {

    if (steps % 2 == 0) {

     System.out.println("Congratulations to Player2. You won in " + steps + " step(s)!");

    } else {

     System.out.println("Congratulations to Player1. You won in " + steps + " step(s)!");

    }

    break;

   } else {

    continue;

   }

  } while (true);



 } //main



 public static String getFileContents(String fileName) {



  String contents = null;

  int length = 0;

  int num = 0;

  try {

   // input

   String folderName = "/subFolder/"; // if the file is contained in the same folder as the .class file, make this equal to the empty string

   String resource = fileName;



   // this is the path within the jar file

   InputStream input = OneLetterGame.class.getResourceAsStream(folderName + resource);

   if (input == null) {

    // this is how we load file within editor (eg eclipse)

    input = OneLetterGame.class.getClassLoader().getResourceAsStream(resource);

   }

   BufferedReader in = new BufferedReader(new InputStreamReader(input));







   in .mark(Short.MAX_VALUE); // see api



   // count number of lines in file

   while ( in .readLine() != null) {

    length++;

   }



   in .reset(); // rewind the reader to the start of file

   contents = new String[length]; // give size to contents array



   // read in contents of file and print to screen

   for (int i = 0; i < length; i++) {

    contents[i] = in .readLine();

   } in .close();

  } catch (Exception e) {

   System.out.println("File Input Error");

  }



  return contents;



 } // getFileContents

}//onelettergame

This is similar to this answer

You are trying to assign a char type to an int value. Try casting to type char like this instead:

charArray[0] = (char) index;

You need to do casting properly use --> charArray[0] = (char) index;

Although if you are doing this in some IDE then compilation error will shown something like this --> Type mismatch: cannot convert from int to char