检测密码 Exercise06_18

import java.util.Scanner;
/**
 * @author 冰樱梦
 * 时间：2018年下半年
 * 题目：检测密码
 *
 */
public class Exercise06_18 {
    public static void main(String[] args){
        Scanner input = new Scanner(System.in);
        System.out.println("输入密码: ");
        String passWord=input.nextLine();
        checkString(passWord);
    }
    public static void checkString(String password){
        int sum=0,s=0;
        if((password.length()>=8)){
            for(int i=0;i<password.length();i++){
                if((('a'<=password.charAt(i))&&(password.charAt(i)<='z')) || (('A'<=password.charAt(i))&&(password.charAt(i)<='Z')) || (('0'<=password.charAt(i))&&(password.charAt(i)<='9'))){
                    s++;
                    if(('0'<=password.charAt(i))&&(password.charAt(i)<='9')) sum++;
                }
                else System.out.println("Invalid Password");
            }
            if((s==password.length())&&(sum>=2)) System.out.println("Valid Password");
        }
        else System.out.println("Invalid Password");
    }
}