"grade" 无法解析为变量
"grade" cannot be resolved to a variable
我有这个练习,问题是如何解决错误“成绩”无法解析为变量,而不在 class 老师中声明它。我想这是我的代码中唯一的错误。对我来说很明显为什么在我的输出中只有等级变量没有分配,但我不知道如何解决它。
public class App {
public static void main(String[] args) throws Exception {
Student studentOne = new Student("FraPedu");
Student studentTwo = new Student("FraIla");
Teacher teacherOne = new Teacher();
teacherOne.teacherName = "Tiziana";
teacherOne.assignGrade(studentOne,10);
teacherOne.assignGrade(studentTwo,10);
studentOne.getStudentDetails();
studentTwo.getStudentDetails();
}
}
public class Student {
public String name;
public int grade;
public Student(String studentName) {
System.out.println("Student object has been created succesfully!");
name = studentName;
}
public void getStudentDetails() {
System.out.println("Student name and grade: " + name + " " + grade);
}
}
public class Teacher {
public String teacherName;
public Teacher() {
System.out.println("Teacher object has been created succesfully!");
}
public void assignGrade(Student alum, int finalGrade) {
grade = finalGrade;
}
}
您需要将成绩分配给要传递给 assignGrade
方法的 Student
对象。
public class Teacher {
public String teacherName;
public Teacher() {
System.out.println("Teacher object has been created succesfully!");
}
public void assignGrade(Student alum, int finalGrade) {
alum.grade = finalGrade; // << this is the line I changed
}
}
我有这个练习,问题是如何解决错误“成绩”无法解析为变量,而不在 class 老师中声明它。我想这是我的代码中唯一的错误。对我来说很明显为什么在我的输出中只有等级变量没有分配,但我不知道如何解决它。
public class App {
public static void main(String[] args) throws Exception {
Student studentOne = new Student("FraPedu");
Student studentTwo = new Student("FraIla");
Teacher teacherOne = new Teacher();
teacherOne.teacherName = "Tiziana";
teacherOne.assignGrade(studentOne,10);
teacherOne.assignGrade(studentTwo,10);
studentOne.getStudentDetails();
studentTwo.getStudentDetails();
}
}
public class Student {
public String name;
public int grade;
public Student(String studentName) {
System.out.println("Student object has been created succesfully!");
name = studentName;
}
public void getStudentDetails() {
System.out.println("Student name and grade: " + name + " " + grade);
}
}
public class Teacher {
public String teacherName;
public Teacher() {
System.out.println("Teacher object has been created succesfully!");
}
public void assignGrade(Student alum, int finalGrade) {
grade = finalGrade;
}
}
您需要将成绩分配给要传递给 assignGrade
方法的 Student
对象。
public class Teacher {
public String teacherName;
public Teacher() {
System.out.println("Teacher object has been created succesfully!");
}
public void assignGrade(Student alum, int finalGrade) {
alum.grade = finalGrade; // << this is the line I changed
}
}