Question

这是我的学生班。

public class Student {
    private String name;
    private long id;
    private double gpa;
    private PersonalData pd;

    public Student(String name, long id, double gpa, PersonalData pd){
        this.name= name;
        this.id=id;
        this.gpa= gpa;
        this.pd= pd;
    }

    public String getName(){
        return name;
    }

    public long getID(){
        return id;
    }

    public double getGPA(){
        return gpa;
    }

    public PersonalData getPersonalData(){
        return pd;
    }

    public String toString(){
        String result= "Name: "+ name+ ", ID: "+ id+ ", GPA: "+gpa+", Personal Data: "+ pd;
        return result;
    }
}

这是测试类：

public class Test {

    public static void main(String[] args) {

        // TODO, add your application code
        PersonalData a= new PersonalData(80,4,1,1232154687);
        Student b= new Student(Ali,123,20,a);
    }
}

它给出了这个错误：

cannot find symbol
        Student b= new Student(Ali,123,20,a);
                               ^
  symbol:   variable Ali
  location: class Test
1 error

我不知道出了什么问题。有人能看到吗？

Answer 1

如下所示

student b= new Student("Ali",123,20,a);

您的Student班级constructor需要String作为名称，您必须像“”中那样传递它，或者像String Ali=""那样创建一个字符串变量，然后将阿里传递为

student b= new Student(Ali,123,20,a);

在测试类中找不到符号错误

1 个答案: