public static void main(String[] args) {
// 在控制台输入字符串,统计出大写的字符的个数,小写的字符个数,数字类型的字符个数,以及其他字符的个数
Scanner sc = new Scanner(System.in); //控制台输入字符串
int big = 0; //初始化字符个数
int small = 0;
int num = 0;
int other = 0;
System.out.println("请输入一串字符串");
String str = sc.next();
for (int i = 0; i < str.length(); i++) {
if (str.charAt(i) >= 65 && str.charAt(i) <= 90) {
big++;
} else if (str.charAt(i) >= 97 && str.charAt(i) <= 122) {
small++;
} else if (str.charAt(i) >= 48 && str.charAt(i) <= 57) {
num++;
} else {
other++;
}
}
System.out.println("大写字母有:" + big + "个");
System.out.println("小写字母有:" + small + "个");
System.out.println("数字有:" + num + "个");
System.out.println("其他字符有:" + other + "个");
}