在Java中,遇到“operator '-' cannot be applied to 'java.lang.string', 'int'”这样的错误提示,通常意味着你尝试在一个字符串(java.lang.String)和一个整数(int)之间使用了-减法运算符,这是不允许的。下面我将分点解释这个问题并提供相应的解决方案。 错误信息的含义: 这个错误信息表明你尝试对不兼容的数...
Operator '!=' cannot be applied to 'int', 'null' 运算符“!=”不能应用于“int”,“null” lqw.eq(bo.getClassId() !=null, StudentClass::getClassId, bo.getClassId()); 把实体类中int型数据改成Long型 privateLong classId;
问出现"Operator '&&‘cannot be applied to 'boolean'，'int'“错误，我不确定原因ENERROR in Canno...
Operator '&' cannot be applied to 'int', 'boolean' 在运行以下代码时,系统报错 Operator '&' cannot be applied to 'int', 'boolean' 原因:J在ava语法中关系运算符的优先级大于逻辑运算符,所以先算(a-1) != 0得到一个boolean类型的值。&左右是布尔类型时会转换成逻辑运算符进行逻辑运算,否则会进行位...
Operator ‘==‘ cannot be applied to ‘int‘, ‘null‘ 今天写代码的时候遇到了一个bug: 如何解决: if(quicklink.getId() ==null) 修改好 Integer id = quicklink.getId();if(id==null || id == 0){} 就好了
1. 2. 3. 4. 5. 6. 7. 8. 9. 程序报错:Operator ‘<=’ cannot be applied to ‘boolean’,‘int’ 原因是Java中 if 语句不支持这样的表达方式。正确的表达方式应该为 if( 3<= i && i <= 5 ){ System.out.println("春天"); }else if( 6 <= i && i <= 8 ){ ...
/* why I am getting this type of error.How to resolve this ? cs(28,27):error CS0019 : operator '-' cannot be applied to operands of type 'string' or 'int'*/ using System; using System.Collections.Generic; using System.Linq; using System.Text; ...
Float price1 = Float.valueOf(price);Float num1 = Float.valueOf(num);你这两句得到的price1，num1是Float（包裹类类型，是一个类），而不是float类型（可以数值计算的浮点型）。应该该成 float price1=Float.parseFloat(price);float num1=Float.parseFloat(num);xiaoji=num1*price1;float...
Error - Operator '==' cannot be applied to operands of type 'int' and 'System.Collections.Generic.List<int>' Error : An exception occurred during a WebClient request. error : Cannot apply indexing with [] to an expression of type 'System.Data.DataColumn' Error :The delegate must have ...
https://stackoverflow.com/questions/45974764/operator-cannot-be-applied-to-types-boolean-and-number Im using this block in my html template : 0"> But im getting this error when i do: ng build--prod--aot Any suggestion how can i fix this ? Answer: ...