代码如下:
package com.StringLearn;
import java.util.Scanner;
public class get_time {
public static void main(String[] args){
Scanner sc =new Scanner(System.in);
System.out.println("input your number:");
String line= sc.nextLine();
//定义三个变量,初始值都是0
int number=0;
int Bigcharacter=0;
int Smallcharacter=0;
//获取每一个字符串
for (int i=0;i<=line.length();i++){
char ch=line.charAt(i);
//做判断
if (ch>='A' && ch<='Z'){
Bigcharacter++;
}else if(ch>='a' && ch<='z'){
Smallcharacter++;
}else if(ch >='0' &&ch<='9') {
number++;
}
}
System.out.println("大写:"+Bigcharacter);
System.out.println("小写:"+Smallcharacter);
System.out.println("数字:"+number);
}
}