统计中英文字符，数字，空格个数

public class LianXi07 {public static void main(String[] args) {int digital = 0;int character = 0;int blank = 0;int other = 0;char[] ch = null;Scanner sc = new Scanner(System.in);String s = sc.nextLine();ch = s.toCharArray();for (int i = 0; i < ch.length; i++) {if (ch[i] >= '0' && ch[i] <= '9') {digital++;} else if (ch[i] > 'a' && ch[i] <= 'z') {character++;} else if ((ch[i] >= 'a' && ch[i] <= 'z') || ch[i] > 'A' && ch[i] <= 'Z') {character++;} else if (ch[i] == ' ') {blank++;} else {other++;}}sc.close();System.out.println("数字个数: " + digital);System.out.println("英文字母个数: " + character);System.out.println("空格个数: " + blank);System.out.println("其他字符个数:" + other);}}