CODEWITHSUNDEEP
javaarrayseclipsecharint
j_fulch
j_fulch

Reputation: 125

Java Int Array returning all 0's

Hello all and thanks for taking the time to look at my question. I'm working on my Java homework (I understand the rules and I don't want you to do my homework, I'm just very stuck and am very confused so please to ban/yell at/poke me)

I have a class called Encryption. I'm calling this class in a Panel, which is being put into a Frame.

I need to read in user input and 'encrypt' that string with my own system using an Array.

I have read my book and searched for answers but I don't know why my INT array is returnign all O's. My Char array is returning the correct Char when I debug it, but my Int array is returning all 0's.

Here is what I have, any advice or suggestions is much appreciated.

Thanks

 import java.util.Scanner;

 public class Encryption {

private String finalEncryption;
int [] numArray = new int[25];
char[] charArray = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
char current;

//constructor
public Encryption(){

}

public String toString(){

    return finalEncryption;
}

public String setEncryption(String entry){

    String newEntry = entry.toUpperCase();

    //loop to go through each letter in the string
    for (int ch = 0; ch < newEntry.length(); ch++)
    {
        current = newEntry.charAt(ch);

        //loop to go through each letter in the alphabet
        for (int i=0; i < 26; i++)
        {
            if(current == charArray[i])
            {
                int finalEntry = numArray[i];
                System.out.println(finalEntry);

            }
            else if (current == numArray[i])
            {

            }

        }

        System.out.println(current);
    }

    return entry;
}

 }

Upvotes: 1

Views: 1377

Answers (2)

user3145373 ツ
user3145373 ツ

Reputation: 8146

Everything in Java not explicitly set to something, is initialized to a zero value.

int that is a 0.

Refer this document.

Upvotes: 1

Martin Konecny
Martin Konecny

Reputation: 59611

An int array defaults to all zero's after you initialize it - this appears to be your case. Nowhere are you setting any values in the int array, you are only initializing it, and then reading it.

Upvotes: 3

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