CODEWITHSUNDEEP
java
majesticUnicorn
majesticUnicorn

Reputation: 29

"Cannot find symbol"-error with custom class

I have got this simple method written in a custom class Numbers.java:

public class Numbers {
    public int add (int n,int m) {
        int i = n + m;
        return i;
    }
}

But when I try to call this method in my main-class like so:

private void btnAddActionPerformed(java.awt.event.ActionEvent evt) {
    int i = add(4, 6);
}

I get an red error sign on the line number of int i = add(4, 6); saying:

 cannot find symbol
   symbol: method add(int,int)
   location: class Main

Also, when I wrote the method in my custom class I got a yellow warning sign on the line number where I declared the method saying "Missing Javadoc". I did some googling on this and found out that you were supposed to add certain URL's to your Java Platform Manager under the tab Javadoc, but as far as I can see all of my URL's are in place. I include a picture of it down below:

enter image description here

I have no idea what is wrong, and I'm grateful for any help!

Upvotes: 0

Views: 960

Answers (1)

hugh
hugh

Reputation: 2280

Your method btnAddActionPerformed is in class Main, and is trying to call a function add, which is in a different class. Try this:

public class Numbers {
    public static int add (int n,int m) {
        int i = n + m;
        return i;
    }
}

And:

private void btnAddActionPerformed(java.awt.event.ActionEvent evt) {                                            
    int i = Numbers.add(4, 6);
}

Upvotes: 1

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