CODEWITHSUNDEEP
java
user3100151
user3100151

Reputation: 69

Bug java. I don't know how to fix it

I'm learning java and there's a bug into this code. I simply don't know howto fix it.

Here's the code:

public class CountLettersInArray {

    public static void main(String[] args) {
    char[] chars = createArray();

    System.out.println("The lowercase letters are:");
    displayArray(chars);    

    int[] counts = countLetters(chars);

    System.out.println(" ");
    System.out.println("The occurence of each letter are: ");
    displayCounts(counts);
    }

    public static void displayCounts(int[] counts) {
        for (int i = 0; i < counts.length; i++);
            if ((i + 1) % 10 == 0);
                System.out.println(counts[i] + " " + (char)(i + 'a'));
                else 
                    System.out.println(counts[i] + " " + (char)(i + 'a') + " ");


    }

    public static int[] countLetters(char[] chars) {
        //Declare and create an array of 26 int
        int[] counts = new int[26];

        //For each lowercase letter in the array, count it
        for (int i = 0; i < chars.length; i++);
            counts[chars[i] - 'a']++;

        return counts;
    }

    public static void displayArray(char[] chars) {
        //Display the characters in the array 20/line
        for (int i = 0; i < chars.length; i++);
            if ((i + 1) % 20 == 0)
                System.out.println(chars[i]);
            else
                System.out.print(chars[i] + " ");
    }

    public static char[] createArray() {
        //Declare the array of characters and create it
        char[] chars = new char[100];

        //Create lowercase characters randomly and assign them to array
        for (int i = 0; i < chars.length; i++);
            chars[i] = RamdomCharacter.getRandomLowerCaseLetter();
        //This return the array 
        return chars;
    }

}

I'm coding it with Eclypse and the software is telling me those two things:

Exception in thread "main" java.lang.Error: Unresolved compilation problems: 
    i cannot be resolved to a variable
    RamdomCharacter cannot be resolved

How am I supose to fix this?

Upvotes: 0

Views: 169

Answers (5)

stinepike
stinepike

Reputation: 54682

apart from the problems noted by other two answer it seems RamdomCharacter is not imported properly. Thats why you are getting such error. import the class properly.

Upvotes: 0

Philipp
Philipp

Reputation: 69663

You are referring to a class RamdomCharacter.

  1. I think you mean RandomCharacter
  2. Do you have such a class in your project?

Upvotes: 1

Sam I am says Reinstate Monica
Sam I am says Reinstate Monica

Reputation: 31194

For you second issue, I don't see where the RamdomCharacter class is defined, but my guess would be that it's actually called RandomCharacter, with an n

Upvotes: 0

Paul Samsotha
Paul Samsotha

Reputation: 209004

for (int i = 0; i < chars.length; i++);    <--- remove the ;
      counts[chars[i] - 'a']++;

The ; ends a statement. Therefore the counts[chars[i] - 'a']++; is not encapsulated in the for loop as you'd expect. So it can't access that i variable.

  • You've done the same thing two other times also
  • use brackets {} to encapsulate your loops

Upvotes: 0

arshajii
arshajii

Reputation: 129517

You're putting ;s at the end of your loops:

for (int i = 0; i < counts.length; i++);
                                       ^

Get rid of those, and surround the loop bodies with {}.

The problem right now is that i exists only in the scope of the loop. But, you've terminated the loop scope by adding the ;, so when you reference i outside you receive a compilation error.

Upvotes: 2

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