java - 将文本文件转为数组

Question

所以我有一个包含这样列表的文件

2134:193

192:1856

1092:1850

980:759

等等

我想处理该文件并将其添加到数组中，然后能够获取 int 的

就像我想做的那样System.out.println("第一+": "+第二);

不确定存储它的最佳方式是什么，但这是我迄今为止的尝试

public static void loadList() {
    BufferedReader br = new BufferedReader(new FileReader("./data.txt"));
    String line;
    while ((line = br.readLine()) != null) {
        String args[];
        args = line.split(":");
        int first = Integer.toInt(args[0]);
        int second = Integer.toInt(args[1]);
        System.out.println(first + " : " + second);
    }
    br.close();
}

Answer 1

试试这个:

Class

 Class DataClass
 {
   public int first; // Deliberately public 
   public int second;

   public DataClass(int val1, int val2){
   this.first = val1;
   this.second = val2;
   }
 }

Code

    public static void loadList() {

    ArrayList<DataClass> pairList = new ArrayList<DataClass>();
    BufferedReader br = new BufferedReader(new FileReader("./data.txt"));
    String line;
    while ((line = br.readLine()) != null) {
        String args[] = line.split(":");
        int first = Integer.valueOf(args[0]);
        int second = Integer.valueOf(args[1]);
        DataClass valPair = new DataClass(first,second);
        pairList.add(valPair);
        System.out.println(valPair.first + " : " + valPair.second);
    }
    br.close();
 }

确保您有正确的 try catch 语句