Java ArrayOutofBound

Question

所以我试着制作一个程序来计算一个字符串有多少个数字和字母，然后将数字保存在一个整数数组和一个字符数组中的字母中，但它不会抛出跳出错误。

public static void main(String[] args) {


        Scanner k = new Scanner(System.in);

        System.out.println("Enter a string");
        String s = k.nextLine();

        int spaceCount = 0;
        int[] intarray;
        char[] charArray;
        int numCount = 0;
        int letterCount = 0;
        for (int i = 0; i < s.length(); i++) {


            if (Character.toString(s.charAt(i)).matches("[0-9]")) {


                numCount++;

            } else if (Character.toString(s.charAt(i)).matches("[a-zA-Z]")) {

                letterCount++;


            }else {

                continue;
            }
        }

        System.out.println(numCount);
        System.out.println(letterCount);

        intarray = new int[numCount];
        charArray = new char[letterCount];



            for (int i = 0; i <s.length(); i++) {


                if (Character.toString(s.charAt(i)).matches("[0-9]")) {

                    intarray[i] = s.charAt(i);
                    continue;
                }else if (Character.toString(s.charAt(i)).matches("[a-zA-Z]")){


                    charArray[i] = s.charAt(i);
                    continue;




                }




            }

            for (int i =0;i<intarray.length;i++){

                System.out.println(intarray[i]);
            }

            for (int i=0;i<charArray.length;i++){

                System.out.println(charArray[i]);
            }
}
}