Java 我无法正确获取此代码Complile。我做错了什么？

/*这些都是我的课程，我在编写我的课程时遇到了困难？我不知道怎么了*/

这将是我的枚举类，我将在case语句中使用它

 public enum Quarter
{
   First,
   Second,
   Third,
   Forth
 }

  private string GetMessage(Quarter quarter, int departmentNumber)
  {
     switch(quarter)
     {
      case Quarter.first:
      return "Enter The First Quarterly Sales For Department [ " + departmentNumber+" ]. . . . . $ ";
      case Quarter.second:
      return "Enter a The Second Quarterly Sales For Department [ " + departmentNumber+" ]. . . . . $ ";
      case Quarter.third:
      return "Enter a The Third Quarterly Sales For Department [ " + departmentNumber+" ]. . . . . $ ";
      case Quarter.forth:
      return "Enter a The Forth Quarterly Sales For Department [ " + departmentNumber+" ]. . . . . $ ";

     }

 }

这些是我的类字段。我不太确定我在网上看到的scanner字段，但它没有正确编译。这是将扫描仪类型声明为字段的正确方法吗

  public class Quarterly
  {
    private final const ROW = 6;
    private final const COL = 4;
    private Scanner _scanner;


  public Quarterly(Scanner scanner) // This Constructor does not compile either? What am I doing Wrong???
  {
      this._scanner = scanner;
  }

这将是一个只接收用户输入的方法。然而，我在这个案例陈述中遇到了麻烦

 public enum Quarter
{
   First,
   Second,
   Third,
   Forth
 }

  private string GetMessage(Quarter quarter, int departmentNumber)
  {
     switch(quarter)
     {
      case Quarter.first:
      return "Enter The First Quarterly Sales For Department [ " + departmentNumber+" ]. . . . . $ ";
      case Quarter.second:
      return "Enter a The Second Quarterly Sales For Department [ " + departmentNumber+" ]. . . . . $ ";
      case Quarter.third:
      return "Enter a The Third Quarterly Sales For Department [ " + departmentNumber+" ]. . . . . $ ";
      case Quarter.forth:
      return "Enter a The Forth Quarterly Sales For Department [ " + departmentNumber+" ]. . . . . $ ";

     }

 }

这将是一个数组，用于获取我的部门总数并对其进行汇总

 public double GetTotalForDepartments(Quarter quarter)
 {
         double [][] sales = new double [ROW][COL];
         int num = 1;
         double total = 0;
        for (int row = 0; row < ROW ; row++)
        {
        // This for statement is taking one column from the array in order to fill with input
             for (int col = 0; col < COL; col++)
             {
                // This will receive sale numbers from the six departments
                System.out.print(message + "[" + num + " ]. . . . . $ ");
                sales[row][col] = _scanner.nextDouble();
                num++;
                // This for statement will sum each department's input
                for (int i = 0; i < sales.length; i++);
                {
                total += sales[row][col];
                }  
             }
        }

return total;
}





/ This will be my main program.

 {
 double test1;
 double test2;
 double test3;
 double test4;

 Scanner  keyboard = new Scanner(System.in);
 Quarterly helper = new Quarterly(keyboard);

 test1 = helper.GetTotalForDepartments(Quarter.First);
 System.out.println(" Test 1 = " + test1);

 test2 = helper.GetTotalForDepartments(Quarter.Second);
 System.out.println(" Test 2 = " + test2);

 test3 = helper.GetTotalForDepartments(Quarter.Third);
 System.out.println(" Test 3 = " + test3);

 test4 = helper.GetTotalForDepartments(Quarter.Fourth);
 System.out.println(" Test 4 = " + test4 " /n ");
 }

public double GetTotalForDepartments（季度）
{
double[]sales=新的双[行][COL]；
int num=1；
双倍合计=0；
对于（int row=0；row

我看到了一些事情

首先，正确使用大写字母。（仅供参考，作为样式提示：常量，例如枚举值，通常都是大写，例如

FIRST

）

其次，无论您在哪里使用

扫描仪

，请执行以下操作之一

添加

import java.util.Scanner位于文件顶部

用全名

java.util.Scanner

而不是

Scanner

来引用它

---

Java中没有所谓的常量。您的变量是什么类型的

private final const ROW = 6;
private final const COL = 4;

---

关于这个问题有很多遗漏的细节

但以下是我注意到的事情

常量-Java中没有常量

应该是

switch(quarter){
    case First:

在第二个代码段中缺少“}”

缺少进口

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当您试图编译Java时，它会给您一个错误。你的错误是什么？你确定你没有遗漏你的主要声明吗？首先：应该是

案例季度。首先，你完成了所有必要的导入？你能把错误贴在这里吗？