问题

public static void main(String[] args) throws IOException {
    String path = "roster.txt";
    String row;
    Integer row1;
    HashTable_NBA<Integer, String> roster = new HashTable_NBA<>();
    BufferedReader read = new BufferedReader(new FileReader(path));

    while ((row = read.readLine()) != null) {
        String[] partition = row.split(" ", 2);
        if (partition.length >= 2) {
            Integer key = Integer.parseInt(partition[1].trim());
            String value = partition[0].trim();
            roster.put(key, value);
        }
    }

    System.out.println(roster);
}

//EDIT
//the errors are these

Exception in thread "main" java.lang.NumberFormatException: For input string: "37 "
at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.base/java.lang.Integer.parseInt(Integer.java:652)
at java.base/java.lang.Integer.parseInt(Integer.java:770)
at HashTable_NBA.main(HashTable_NBA.java:161)

<details>
<summary>英文:</summary>

I want to get parse (if possible) the partition that contains the string that is a number(i.e.&quot;95&quot;) but I could accept any strategy to do it. my code works for hashMaps&lt;string, string&gt;

to not make this lengthy, this is how the lines in the input file look like:

Kostas_Antetokounmpo 37	

public static void main (String[] args) throws IOException {
String path = "roster.txt";
String row;
Integer row1;
HashTable_NBA<Integer,String> roster = new HashTable_NBA<>();
BufferedReader read = new BufferedReader(new FileReader(path));

    while ((row = read.readLine()) != null){

        String[] partition = row.split(" ", 2);
        if(partition.length >= 2){
            Integer key = Integer.parseInt(partition[1]);
            String value = partition[0];
            roster.put(key, value);

        }
    }
  
        System.out.println(roster);
    

}

}

//EDIT
//the errors are these

Exception in thread "main" java.lang.NumberFormatException: For input string: "37 "
at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.base/java.lang.Integer.parseInt(Integer.java:652)
at java.base/java.lang.Integer.parseInt(Integer.java:770)
at HashTable_NBA.main(HashTable_NBA.java:161)

答案1

得分: 0

这只是我的猜测，但我认为值之间可能有多个空格。我将从分割命令中删除2。那会引起问题。

        while ((row = read.readLine()) != null){

            String[] partition = row.split("\\s+");
            if(partition.length >= 2){
                Integer key = Integer.parseInt(partition[1]);
                String value = partition[0];
                roster.put(key, value);

            }
        }

        while ((row = read.readLine()) != null){

            String[] partition = row.split("\\s+");
            if(partition.length >= 2){
                Integer key = Integer.parseInt(partition[1]);
                String value = partition[0];
                roster.put(key, value);

            }
        }

</details>