影3316
2019-04-13 00:39
public Set<Course> coursesToSelect; public Student student;
/** * 学生类 * @author Administrator * */ public class Student { public String id; public String name; public Set<Course> courses; public Student(String id, String name) { this.id = id; this.name = name; this.courses = new HashSet<>(); } }
this.courses = new HashSet<Course>();
泛型里的Course类没加
Java入门第三季
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