用java编写一段程序，完善学生student类，增加输入学生的成绩的 *** 作方法，如果小于0分或者

import java.util.Scanner

public class Student {

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner scan=new Scanner(System.in)

System.out.print("请输入学生姓名:")

String name=scan.nextLine()

System.out.print("请输入学生成绩:")

int score=scan.nextInt()

if(score<=0||score>100){

System.out.println("输入的"+name+"的成绩超出范围了！")

scan.close()

}else{

System.out.println(name+"的成绩为："+score)

scan.close()

}

}

}

直接在IDE里面输入数据吗？

那是这样的：

import java.util.Scanner

public class Marks {

public void getMark(int stuNum,int[] rtnStuMark) {

Scanner input=new Scanner(System.in)

int i

for(i=0i<stuNum++i) {

System.out.print("输入第" + (i+1) + "个学生的分数：")

rtnStuMark[i]=input.nextInt()

}

input.close()

}

public int getBestScore(int[] stuMark) {

int i

int highest=0

for (i=0i<stuMark.length++i)

if (stuMark[i]>highest) highest=stuMark[i]

return highest

}

public char getGrade(int stuMark,int best) {

if (stuMark>=best-10) return 'A'

else if (stuMark>=best-20) return 'B'

else if (stuMark>=best-30) return 'C'

else if (stuMark>=best-40) return 'D'

else return 'F'

}

public static void main(String args[]) {

Marks mark=new Marks()

Scanner input=new Scanner(System.in)

int i

int best

System.out.print("输入学生总数：")

int num=input.nextInt()

int[] stuMark=new int[num]

mark.getMark(num, stuMark)

best=mark.getBestScore(stuMark)

for (i=0i<num++i)

System.out.println("第"+(i+1)+"个学生等第："+mark.getGrade(stuMark[i], best))

input.close()

}

}

表示我编了30分钟，给个满意答案啊！

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