Thank you! Hopefully I will learn how zo work withthese tasks...

Don't change the method's signature:

public class Kata {
    public static int findDeletedNumber(int[] arr, int[] mixedArr) {
        //Your code here
    }
}

Don't create a main method, I already referred you to the docs about that. Also, the starting array being the numbers from 1 to 9 is an example, your function should take that as the first argument. It can be something different too.

Now I wrote a new code to another kata and on purpose very different from the example, but in the output apparently the methods ofthe example code ar exected. I thought, the challenge is to write an own code for solving the Kata? What do I have to do for solving the Kata? :'(

Allright, thank you. I'm glad to read that. It's more fun to write an individual code and it's better practice, too. :)

This is the initial code for Java:

public class StringToNumber {
  public static int stringToNumber(String str) {
    //TODO: Convert str into a number
  }
}

Your code should be below or replacing that comment line.

I didn't copy and paste it. I adjusted it step by step, because I thought the code has to look very similar to the example. Thank you for the tip, I will delete my code and restart.

Your current code looks like you've copied/pasted the sample tests to Solution panel. Click reset and start over. Or post your code following these guidelines: https://docs.codewars.com/training/troubleshooting#post-discourse

I need help with Kata Convert a String to a Number. My code won't compile and I can't find the reason why. I compared my code to Instructio and Sample Test again and again, debugged it in IntellyJ, where it runs without problems. It's driving me crazy, not to find the problem. If anybody could help me,I'ld be very grateful.
The language is Java.

July1975

The description says: "[...] return the sum of all of the positive [numbers]". Do you know what sum is? Do you know what return means?

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Thank you, I guess, I got it.

Read this: https://docs.codewars.com/training/training-example

And that code doesn't do what the kata asks.