View Compilation Error

0_0_20739178_14130\Main.java:13: 错误: 找不到符号
        Scanner sc = new Scanner(new FileInputStream(new File("src/com/acm/dij.txt")));
                                     ^
  符号:   类 FileInputStream
  位置: 类 Main
0_0_20739178_14130\Main.java:13: 错误: 找不到符号
        Scanner sc = new Scanner(new FileInputStream(new File("src/com/acm/dij.txt")));
                                                         ^
  符号:   类 File
  位置: 类 Main
2 个错误