java - 一个类不会导入到另一个类中如何解决这个问题？

Question

我创建了一个包含常量的类，如图所示，所有类都位于默认的 src 文件夹中

public final class SectionType {
    public static final String LABS = "LABS";
    public static final String LAB_REPORTS = "LABREPORTS";
    public static final String HOMEWORK = "HOMEWORK";
    public static final String EXAM01 = "EXAM 1";
    public static final String EXAM02 = "EXAM 2";
    public static final String FINAL = "FINAL";
}

我现在需要在另一个类中使用这些常量，如下所示

import static SectionType.*;
public class Student {
public void addGrade(SectionType type, double grade) {
            if(type.equals(EXAM01)) {
                this.exam01 = grade;
            }
            if(type.equals(EXAM02)) {
                this.exam02 = grade;
            }
            if(type.equals(FINAL)) {
                this.finalExam = grade;
            }
            if(type.equals(LABS)) {
                this.labSum += grade;
                this.labCount++;
            }
            if(type.equals(LAB_REPORTS)) {
                this.labRSum += grade;
                this.labRCount++;
            }
            if(type.equals(HOMEWORK)) {
                this.hwSum += grade;
                this.hwCount++;
            }
        }
}

让它发挥作用的最佳方法是什么？

Answer 1

addGrade 类已更改为以下内容

public void addGrade(String type, double grade) {
            if(type.equals(SectionType.EXAM01)) {
                this.exam01 = grade;
            }
            if(type.equals(SectionType.EXAM02)) {
                this.exam02 = grade;
            }
            if(type.equals(SectionType.FINAL)) {
                this.finalExam = grade;
            }
            if(type.equals(SectionType.LABS)) {
                this.labSum += grade;
                this.labCount++;
            }
            if(type.equals(SectionType.LAB_REPORTS)) {
                this.labRSum += grade;
                this.labRCount++;
            }
            if(type.equals(SectionType.HOMEWORK)) {
                this.hwSum += grade;
                this.hwCount++;
            }
        }