Question

This is my method

private char[] listFindChar;
public void setlistFindChar(char letter){

int pos;
if (listFindChar !=null)
        {

            pos = listFindChar.length;
            pos ++;
            listFindChar[pos]=letter; 
        }
else{
  listFindChar[0] = letter; (cause problem)

}

Why the char is not add in the array of chars at the position[0]??

Thanks for helping me!!

Frank

Answer 1

You need to initialize the array, e.g.:

private char[] listFindChar = new char[100];

Otherwise, you just defined an array that is not initialized and points to some place throwing NullPointerExceptions at you for some reason…