編寫一段程序,完善學生 student 類,增加輸入學生的成績的操作方法,如果小於 0 分或者大於 100 分則拋出異常,並捕捉異常,輸出提示信息:輸入的學生成績超出範圍了!
import java.util.Scanner;
class MyException extends Exception{
public MyException(String msg) {
super(msg);
}
}
class Student{
private String name;
private int age;
private int score;
public void setScore(int score) throws Exception{
if(score>0&&score<=100)
this.score=score;
else
throw new MyException("輸入的學生成績超出範圍了!");
}
public String getScore(){
if(score >= 60)
return "考試成績及格";
else if(score<60&&score!=0)
return "考試成績不及格";
else
return "成績輸入錯誤!";
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String toString(){
return ("姓名:" + getName() +",年齡:" + getAge() + ",考試情況:" + getScore());
}
}
public class Experiment {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner(System.in);
Student student = new Student();
student.setName("小張");
student.setAge(22);
System.out.print("輸入成績:");
int score = sc.nextInt();
try{
student.setScore(score);
}catch(MyException e){
System.out.println(e.getMessage());
}
System.out.println(student);
System.out.println("*****************");
}
}
運行可能結果:
輸入成績:120
輸入的學生成績超出範圍了!
姓名:小張,年齡:22,考試情況:成績輸入錯誤!
*****************