eclips上正常运行，编程练习里不可以

import java.util.Scanner;
 
public class ScoreDemo{
       public static void main(String[] args){
           //定义一个三行两列的整型二维数组intArray
           int[][] intArray=new int[3][2];
           //从键盘输入学生成绩，要求输入顺序与效果图一致
           Scanner sc =new Scanner(System.in);
           for(int i=0;i<intArray.length;i++) {
               for(int j=0;j<intArray[i].length;j++) {
                  if(j==0) {
                      System.out.println("请输入学生"+(i+1)+"的语文成绩:");
                      intArray[i][j]=sc.nextInt();
                  }else if(j==1) {
                      System.out.println("请输入学生"+(i+1)+"的数学成绩");
                      intArray[i][j]=sc.nextInt();
                  }
               }
           }
 
           int sum1 = 0,sum2=0;
           //求语文的总成绩和平均分
           for(int i=0;i<intArray.length;i++){
               for(int j=0;j<intArray[i].length;j++) {
                   if(j==0) {
                       sum1+=intArray[i][j];
                   }
               }
           }
           System.out.println("语文的总成绩为："+sum1);
           System.out.println("语文的平均分为："+(sum1/intArray.length));
            
 
           //求数学的总成绩和平均分
           for(int i=0;i<intArray.length;i++){
               for(int j=0;j<intArray[i].length;j++) {
                   if(j==1) {
                       sum2+=intArray[i][j];
                   }
               }
           }
           System.out.println("数学的总成绩为："+sum2);
           System.out.println("数学的平均分为："+(sum2/intArray.length));
            
 
 
       }
    }