posted 1 year ago

Hi, I'm having a hard time figuring out how to initialize my array with prime numbers using the method I created. I keep getting this error: "incompatible types: possible lossy conversion from long to int" for the line

primes[number] = number;

How do I fix this? Here is what I wrote:

Hi, I'm having a hard time figuring out how to initialize my array with prime numbers using the method I created. I keep getting this error: "incompatible types: possible lossy conversion from long to int" for the line

primes[number] = number;

How do I fix this? Here is what I wrote:

posted 1 year ago

Welcome to the Ranch.

You probably know that array indices start counting from zero. Looking to your code, you start filling an array from position 2 (at best), which is the 3rd element in an array - probably it isn't what you want.

You correctly identified that you need a method which defines if number is a prime one. Is that method correct? Have you tested, verified that?

Going back to the loop within the main method, in order to fill in an array fully, you need to iterate over each its element position, that means starting from index 0 each time increasing it by 1, until condition 'index < primes.length' fails.

You probably know that array indices start counting from zero. Looking to your code, you start filling an array from position 2 (at best), which is the 3rd element in an array - probably it isn't what you want.

You correctly identified that you need a method which defines if number is a prime one. Is that method correct? Have you tested, verified that?

Going back to the loop within the main method, in order to fill in an array fully, you need to iterate over each its element position, that means starting from index 0 each time increasing it by 1, until condition 'index < primes.length' fails.

posted 1 year ago

- 1

This is a continuation of this thread https://coderanch.com/t/672713/java/Writing-static-method-calculates-number

Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems.