class PrimaryStudent extends Student{
// TODO
protected int grade;
public PrimaryStudent(String name,int age,int score,int grade){
super(name,age,score);
this.grade = grade;
}
public int getGrade(){
return grade;
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Im袁国伟
class PrimaryStudent extends Student{
// TODO
protected int grade;
public PrimaryStudent(String name,int age,int score,int grade){
super(name,age,score);
this.grade = grade;
}
public int getGrade(){
return grade;
}
}