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View Compilation Error

0_0_34151532_22683\Main.java:1: 错误: 程序包java.uti1不存在
import java.uti1.ArrayList;
                ^
0_0_34151532_22683\Main.java:3: 错误: 程序包java.uti1不存在
import java.uti1.Scanner;
                ^
0_0_34151532_22683\Main.java:9: 错误: 找不到符号
Scanner sr=new Scanner(System. in);
^
  符号:   类 Scanner
  位置: 类 Main
0_0_34151532_22683\Main.java:9: 错误: 找不到符号
Scanner sr=new Scanner(System. in);
               ^
  符号:   类 Scanner
  位置: 类 Main
0_0_34151532_22683\Main.java:11: 错误: 找不到符号
ArrayList<Integer> list=new ArrayList<Integer>();
^
  符号:   类 ArrayList
  位置: 类 Main
0_0_34151532_22683\Main.java:11: 错误: 找不到符号
ArrayList<Integer> list=new ArrayList<Integer>();
                            ^
  符号:   类 ArrayList
  位置: 类 Main
6 个错误


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