1.创建需要的实体类
public class Student { //学生实体类
private String name; //姓名
private Integer age; //年龄
private Grade grade; //年级
@Override
public String toString() {
return "Student [name=" + name + ", age=" + age + ", grade=" + grade
+ "]";
}
public Student() {
super();
}
public Student(String name, Integer age, Grade grade) {
super();
this.name = name;
this.age = age;
this.grade = grade;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public Grade getGrade() {
return grade;
}
public void setGrade(Grade grade) {
this.grade = grade;
}
}