Java 从文本文件中获取值，然后将其放入没有重复项的列表中？

我有一个程序，它可以读取一个文本文件，该文件的数据格式为

`FootballTeamName1 : FootballTeamName2 : FootballTeam1Score : FootballTeam2Score

当前，它读取文件并在每个冒号处拆分它。我想知道的是，如何使它在每次遇到一个名称时，它都会将该名称添加到列表中（如果该名称不存在），或者如果该名称不存在，则它不会创建重复的值，而是将该值添加到已存在的值中球队名称

我目前有一个程序，可以在搜索团队时获取其值，但我想做的是使其成为可能，当用户未指定团队时，它将使其成为可能，以便返回所有团队的结果。下面是我目前所做的，它询问文件的位置，并要求用户指定一个有效的文件，但我不确定如何做我想要的

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

public class reader {

//used to count the number of invalid and valid matches

public static boolean verifyFormat(String[] words) {
    boolean valid = true;
    if (words.length != 4) { 
        valid = false;
    } else if (words[0].isEmpty() || words[0].matches("\\s+")) {
        valid = false;
    } else if ( words[1].isEmpty() || words[1].matches("\\s+")) {
        valid = false;
    }

    return valid && isInteger(words[2]) && isInteger(words[3]);}

//checks to see that the number of items in the file are equal to the four needed and the last 2 are integers
//also checks to make sure that there are no results that are just whitespace

public static boolean isInteger( String input ) {
    try {
        Integer.parseInt( input );
        return true;
    }
    catch( Exception e ) {
        return false;
    }
}
//checks to make sure that the data is an integer

public static void main(String[] args) throws IOException {

      Scanner sc = new Scanner(System.in);
      while(true){ //Runs until it is specified to break

            Scanner scanner = new Scanner(System.in);


        System.out.println("Enter filename");
        String UserFile = sc.nextLine();
        File file = new File(UserFile);
        if(!file.exists()) {
          continue;
        }

        if(UserFile != null && !UserFile.isEmpty()){ 
            System.out.println("Do you want to generate plain (T)ext or (H)TML");
            String input = scanner.nextLine();
            if ( input.equalsIgnoreCase("H") ) {
                processFile(UserFile)   ;           }
            else if ( input.equalsIgnoreCase("T")){
                  processFile(UserFile);
            }
                  else{
                        System.out.println("Do you want to generate plain (T)ext or (H)TML");


                    }

        }
      }
    }

//checks how the user wants the file to be displayed 

private static void processFile(String UserFile) throws FileNotFoundException {
    String hteam;
    String ateam;
    int hscore;
    int ascore;
    int totgoals = 0;
    int gamesplayed = 0;
    int gs = 0;
    int gc = 0;
    int w = 0;
    int d = 0;
    int l = 0;
    String newLine = System.getProperty("line.separator");//This will retrieve line separator dependent on OS.


    Scanner s = new Scanner(new BufferedReader(
            new FileReader(UserFile))).useDelimiter("\\s*:\\s*|\\s*\\n\\s*");

    Scanner scanner = new Scanner(System.in);

    System.out.println("Enter the name of the team you want the results for");
    String input = scanner.nextLine();


    while (s.hasNext()) {
        String line = s.nextLine();
        String[] words = line.split("\\s*:\\s*");
        //splits the file at colons

        if(verifyFormat(words)) {
            hteam = words[0];       // read the home team
            ateam = words[1];       // read the away team
            hscore = Integer.parseInt(words[2]);       //read the home team score
            totgoals = totgoals + hscore;
            ascore = Integer.parseInt(words[3]);       //read the away team score
            totgoals = totgoals + ascore;

             if ( input.equalsIgnoreCase(hteam)){
                 gamesplayed = gamesplayed + 1;
                 gs = gs + hscore;
                 gc = gc + ascore;
                 if (hscore > ascore)
                     w = w + 1;
                 else if (ascore > hscore)
                     l = l + 1;
                 else
                     d = d + 1;
             }
             else if (input.equalsIgnoreCase(ateam)){
                 gamesplayed = gamesplayed + 1;
                 gs = gs + ascore;
                 gc = gc + hscore;
                 if (hscore < ascore)
                     w = w + 1;
                 else if (ascore < hscore)
                     l = l + 1;
                 else
                     d = d + 1;
             }
        }
    }
    System.out.println(input + newLine + "--------------------------" + newLine + "Games played: " + gamesplayed +   newLine + "Games Won: " + w + newLine + "Games Drawn: " + d + newLine + "Games Lost: " + l + newLine + "Goals For: " + gs + newLine + "Goals Against: " + gc);   
}
}

---

如果希望集合中没有重复的元素，请使用集合。集合是不包含重复元素文档的集合。

您可以将条目添加到集合中，或者如果希望对其进行排序，也可以将其添加到SortedSet中。由于Set只保存唯一的值，所以每个值始终只有一个副本

作为参考，以下代码使用5个值，但集合将只有3个唯一值：

String str = "A : B : C : B : A";
String[] vals = str.split(":");
SortedSet<String> myVals = new TreeSet<String>();
for(String val : vals)
{
    myVals.add(val.trim());
}

System.out.println("Set size: " + myVals.size());

---

听起来你想从一个团队到另一个得分的地图，如果团队已经存在，那么从地图中获取值，并将分数添加到地图中。

阅读相关内容后，我知道如何将其添加到地图中，但我不知道如何只添加正确的，我该如何做才能让它添加第一个团队名称，然后添加分数，而不是将所有值添加到地图中？不确定你的意思，如果你想要一个结果列表，只需将团队映射到一个分数列表即可