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View Compilation Error

0_0_13651332_15327\Main.java:19: 错误: 找不到符号
    public static void findSolution(List<Curriculum> curriculums){
                                    ^
  符号:   类 List
  位置: 类 Main
0_0_13651332_15327\Main.java:3: 错误: 找不到符号
        Scanner scanner=new Scanner(System.in);
        ^
  符号:   类 Scanner
  位置: 类 Main
0_0_13651332_15327\Main.java:3: 错误: 找不到符号
        Scanner scanner=new Scanner(System.in);
                            ^
  符号:   类 Scanner
  位置: 类 Main
0_0_13651332_15327\Main.java:7: 错误: 找不到符号
            List<Curriculum> curriculums=new ArrayList<Curriculum>();
            ^
  符号:   类 List
  位置: 类 Main
0_0_13651332_15327\Main.java:7: 错误: 找不到符号
            List<Curriculum> curriculums=new ArrayList<Curriculum>();
                                             ^
  符号:   类 ArrayList
  位置: 类 Main
0_0_13651332_15327\Main.java:20: 错误: 找不到符号
        Collections.sort(curriculums,new Comparator<Curriculum>() {
                                         ^
  符号:   类 Comparator
  位置: 类 Main
0_0_13651332_15327\Main.java:20: 错误: 找不到符号
        Collections.sort(curriculums,new Comparator<Curriculum>() {
        ^
  符号:   变量 Collections
  位置: 类 Main
7 个错误


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