Java课程实验1：随机抽查与成绩统计

package shiyanyi;
import java.util.*;
import java.util.Scanner;
import java.io.*;
public class Choucha {
    static int num=10;
    static int i,j,k=0;
public static void GetFile(String filename) {
        try {
         ArrayList<Integer> arr = new ArrayList<>();
         Scanner scanner = new Scanner(new File(filename));
         scanner.useDelimiter(System.getProperty("line.separator"));//作用等同换行符
         while(scanner.hasNextInt()) {
         arr.add(scanner.nextInt());
         }
         scanner.close();
         int score[]=new int [num];
         for(;i<num;i++) {
         Random ran=new Random();
int a=arr.get(ran.nextInt(arr.size()));
arr.remove(ran.nextInt(arr.size()));
System.out.println("抽查成绩"+(i+1)+"："+a);
score[i]=a;
}
         int AB[]=new int[3];
         for(;j<num;j++) {
         if(score[j]>=70)
         AB[0]++;//及格人数（包括良好及优秀）
         if(score[j]>70&&score[j]<=80)
         AB[1]++;//良好人数