如何將txt文件數據讀入arraylist

Question

以下數據在Admin.txt文件中

ID，用戶名，密碼，名稱，電子郵件，contactNumber，icNumber

AD001|admin|admin|admin|admin@gmail.com|0123456789|931245678976
AD002|jeff|jeff|jefferyleo|jefferyleo@gmail.com|12345678790|941457431246

我應該如何將這些數據讀入arraylist？

List<Admin> adminList = new ArrayList<Admin>();

這是我貼標的arrayList。

BufferedReader br = new BufferedReader(new FileReader("Admin.txt"));
String strLine;
while((strLine = br.readLine()) != null)
{
     String[] values = strLine.split("|");
     adminList.add(new Admin());
}

Answer 1

像這樣向您的Admin類添加一個構造函數，但要包含所有數據的字段：

public class Admin {
    private final String id, username, password, name, email, contactNumber, icNumber;
    public Admin (String[] values) {
        this.id = values[0];
        this.username = values[1];
        this.password = values[2];
        this.name = values[3];
        this.email = values[4];
        this.contactNumber = values[5];
        this.icNumber = values[6];
    }
}

請注意，這並不意味着要成為整個Admin類，您只需要修改構造函數使其看起來像這里的那個即可。

然后在您的循環中執行以下操作：

adminList.add(new Admin(values));

Answer 2

也許這段代碼可以幫助您

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

      BufferedReader br = new BufferedReader(new FileReader("Admin.txt"));
      ArrayList<Admin> al = new ArrayList<Admin>();
      String line = null;
      while ((line = br.readLine()) != null) {
        Admin admin = new Admin();
        String lines[] = line.split("|");
        /*adjust accordingly
        admin.setName(lines[0]);
        admin.setUser(lines[1]);
            ....*/
        al.add(admin);          
      }
      br.close();
}