7 判断输入字符个数

 题目：输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数。

          public class _007CountStringAll {

    public static void main(String[] args) {
        printCount();
    }

    private static void printCount() {
        while (true) {
            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入一组字符 : ");
            String string = scanner.nextLine();
            char[] ch = string.toCharArray();
            count(ch);
        }
    }

    private static void count(char[] ch) {
        int adbCount = 0;
        int spaceCount = 0;
        int numCount = 0;
        int otherCount = 0;

        for (int i = 0; i < ch.length; i++) {
            // 判断是否是字母
            if (Character.isLetter(ch[i])) {
                adbCount++;
            } //判断是否是数字
            else if (Character.isDigit(ch[i])) {
                numCount++;
            } else if (Character.isSpaceChar(ch[i])) {
                spaceCount++;
            } else {
                otherCount++;
            }
        }
        System.out.println("字母个数是:" + adbCount);
        System.out.println("数字个数是:" + spaceCount);
        System.out.println("空格个数是:" + numCount);
        System.out.println("其他字符个数是:" + otherCount);
    }

}