java - 检查 if 语句中所有条件的最有效方法？

Question

所以我尝试针对多个条件执行此 if 语句，为了使密码符合条件，它应该满足 5 项中的 4 项。我收到一条错误消息

运算符 && 未定义参数类型 boolean, int

注意:错误发生在我的方法底部，(if语句错误)

      public void passRequirments(){


        int digit,symbol,upper,lower;
        int countDigit, countSymbol,countUpper,countLower;
        countDigit = 0;
        countSymbol= 0;
        countUpper = 0;
        countLower = 0;

        for (int i = 0; i < passChar.length; i++){
        digit = (int)passChar[i] ;
        symbol = (int)passChar[i];
        upper  = (int)passChar[i];
        lower  = (int)passChar[i];

        if(digit >=48 && digit <= 57){
          countDigit = 1;
          System.out.println(countDigit);
        }
        else if(symbol >=32 && symbol <= 47 || symbol >=58 && symbol <= 64 ||
                symbol >=91 && symbol <= 96 || symbol >=123 && symbol <= 126){
          countSymbol = 1;
          if (countSymbol == 1){

            System.out.println("hello");
          }
        }
        else if( upper >=65 &&  upper <= 90){
          countUpper = 1;
        }
        else {
          countLower = 1;
        }

 }
         //this is where i'm running into error

        if(passChar.length  >= 8  && countDigit == 1 && countSymbol && countUpper == 1 ||
          passChar.length >= 8 && countDigit == 1 && countSymbol && countLower == 1 ||
          passChar.length >= 8 && countDigit == 1 && countLower  && countUpper == 1 ||
          passChar.length >= 8 && countSymbol == 1 && countLower && countUpper == 1){

       System.out.println("Password Qualfies!");
       passwordScore = passwordScore + 10;

      }
      else {

       System.out.println("Password Doesn't Qualify!");


      }


  }

Answer 1

在java中，if语句中的参数应该是严格的boolean。

我看到您只是在检查 countSymbol 而不是根据您的要求它应该是 countSymbol == 0 或 countSymbol > 0 .

if(passChar.length  >= 8  && countDigit == 1 && countSymbol==0 && countUpper == 1 ||
                                                     ^ change this

对其他Or条件也做类似的修改