java - 文件/变量错误 Java

Question

此代码查看数百个名称并查找它们的流行度和含义。我有两个问题。我想要完成的错误所在是将名称含义的文本打印到图表的顶部。1. 如何修复此错误:

BabyNames.java:82: error: cannot find symbol
      String meanings = findingStatistics(console,meaningsFile);

2.当findStatistics运行两次时，变量statistics仅保存名称含义的信息。如何访问该名称的受欢迎程度以使用我的图表？现在我已经有了相当于统计的整个方法，这就是意义。

这是我的代码:

import java.util.*;
import java.io.*;
import java.awt.*;

public class BabyNames{ //ADD COMMENTS
   public static final int STARTINGYEAR = 1890;
   public static final int WIDTH = 60;
   public static final int HEIGHT = 30; 
   private static String nameFinal;
   public static void main(String[] args) throws FileNotFoundException{
      Scanner console = new Scanner(System.in);
      DrawingPanel panel = new DrawingPanel(780,560);
      Graphics g = panel.getGraphics();
      Scanner nameFile = new Scanner(new File("names.txt"));
      Scanner meaningsFile = new Scanner(new File("meanings.txt"));
      Scanner nameFile2 = new Scanner(new File("names2.txt"));
      intro();
      fixedGraph(g);
      nameFinal = nameToLowerCase(console);
      if(STARTINGYEAR == 1890){
         findingStatistics(console,nameFile);;
         changingGraph(console,g);
      }
      else{
         findingStatistics(console, nameFile2);
         changingGraph(console,g);
      }
      findingStatistics(console,meaningsFile);
   }



   public static void intro(){
      System.out.println("This program allows you to search through the");
      System.out.println("data from the Social Security Administration");
      System.out.println("to see how popular a particular name has been");
      System.out.println("since 1890" );
      System.out.println();
      System.out.print("Name: ");
   }

   public static String nameToLowerCase(Scanner console){   
      String originalName = console.next();
      String name = "" ;
      int lengthOfName = originalName.length();
      String beginingOfName = originalName.substring(0,1).toUpperCase();
      String endOfName = originalName.substring(1,lengthOfName).toLowerCase();
      name = beginingOfName + endOfName;
      return name;
   }
   public static String findingStatistics(Scanner console, Scanner data){
     // String nameFinal = nameToLowerCase(console);
      boolean goesThroughOnce = false; //
      String statistics = "";
      String currWord = "";
      String currLine = "";
      while (data.hasNext() && goesThroughOnce == false){ 
         currLine = data.nextLine();
         Scanner lineBeingRead = new Scanner(currLine); //make other scanners?? for each file
         currWord = lineBeingRead.next(); //

         if (currWord.equals(nameFinal) || currWord.equals(nameFinal.toUpperCase())){   //         
            statistics = currLine;
            goesThroughOnce = true;
            System.out.println(statistics);
         }
         else{
         }
      }
      return statistics;
   }
   public static void fixedGraph(Graphics g){ //Draws fixed things such as gray blocks and black lines
      g.setColor(Color.LIGHT_GRAY);
      g.fillRect(0,0,780,HEIGHT);
      g.fillRect(0,560-HEIGHT,780,HEIGHT);
      g.setColor(Color.BLACK);
      g.drawLine(0,HEIGHT,780,HEIGHT);
      g.drawLine(0,560-HEIGHT,780,560-HEIGHT);
   }

   public static void changingGraph(Scanner console, Graphics g){  
      String meanings = findingStatistics(console,meaningsFile);
      g.drawString("" + meanings,0,16); //draws meaning text
      int startingYear = STARTINGYEAR;
      int amountOfDecades = 0;
      if(startingYear == 1890){
         amountOfDecades = 13;
      }
      else{
         amountOfDecades = 8;
      }
      g.drawString("" + startingYear,0,552); //fencepost 
      for(int i=0; i<=amountOfDecades;i++){ 
         int year = startingYear + (10 * i);
         g.drawString("" + year,(WIDTH*i),552); //draws decade numbers
      }      
   }
}

如果我在错误所在处添加//并且不包含该错误，只是为了更好地理解代码，对于名称“Aaron”，它应该打印出来:

Name: AARON
Aaron f 0 0 0 0 0 0 0 0 0 883 0 0 0
AARON m English, Biblical From the Hebrew name ??????? ('Aharon) which is most likely of unknown Egyptian origin.

简而言之，我试图让它在图表上打印文本，并为含义和流行度创建两个变量(我将它们都放在统计数据中)。

Answer 1

您的changingGraph方法仅使用console来计算meanings，当然，它还需要meaningsFile。从 changingGraph 中删除对 findingStatistics 的调用会更有意义，特别是因为无论如何您都是从 main 调用它的。

因此，更改 changingGraph 的签名，使其采用 meanings 作为参数，并删除方法主体的第一行。然后它看起来像这样。

public static void changingGraph(String meanings, Graphics g){  
    g.drawString("" + meanings,0,16); //draws meaning text
    // ... and so on.

然后，当您调用它时，将上次调用返回的值传递给 findingStatistics。因此，在您的 main 方法中，您将拥有这个。

  if(STARTINGYEAR == 1890){
     findingStatistics(console,nameFile);
  }
  else{
     findingStatistics(console, nameFile2);
  }
  String meanings = findingStatistics(console, meaningsFile);
  changingGraph(meanings, g);