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POConstructor in class cannot be applied to given types
 

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    <p>I ve got the following code using arrays to find some prim numbers. However, when trying to compile my user class PalindromeArrayUser it says - "Constructor in class cannot be applied to given types"</p> <p>required: int. found: no arguments. reason: actual and formal arguments lists differ in length.</p> <p>However, I have passed to the constructer an int value (the same way it was designed in my blueprint). I don't quite get where the problem comes from. Thanks. </p> <p>Here are my two classes </p> <pre><code> public class PalindromeArray { int arrLength; public PalindromeArray(int InputValue) { arrLength = InputValue; } int arr[] = new int[arrLength]; boolean check[] = new boolean [arrLength]; public void InitializeArray() { for (int k = 2; k &lt; arr.length; k++) { arr[k] = k; check[k] = true; } } public void primeCheck() { for (int i = 2; i &lt; Math.sqrt(arr.length - 1); i++ ) { if (check[i] == true) { for (int j = 2; j &lt; arr.length; j++) { if (j % i == 0) { check[j] = false; check[i] = true; } } } } } public void PrintArray() { for (int k = 2; k &lt; arr.length; k++) { if ((!check[k]) == false) System.out.println(arr[k]); } } } </code></pre> <p>And this is my User class where the problem comes from. The class above compiles fine.</p> <pre><code> import java.io.*; public class PalindromeArrayUser extends PalindromeArray { public static void main(String argv[]) throws IOException { BufferedReader input = new BufferedReader(new InputStreamReader(System.in)); System.out.println("Please enter the upper bound."); String line = input.readLine(); int InputUser = Integer.parseInt(line); // this is where I pass the same int type as I // constructed it PalindromeArray palindrome = new PalindromeArray(InputUser); palindrome.InitializeArray(); palindrome.primeCheck(); palindrome.PrintArray(); } } </code></pre>
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