java - 在Java中将对象作为列表输入到数组中

Question

我是 Java 的初学者。我想从用户获取输入到二维数组，并转换为对象列表。

当我对数据进行硬编码时，可以这样做

class Job // Job Class
{
   public int taskID, deadline, profit;

   public Job(int taskID, int deadline, int profit) {
   this.taskID = taskID;
   this.deadline = deadline;
   this.profit = profit;
   }
}

public class JobSequencing{

  public static void main(String[] args) {
  // List of given jobs. Each job has an identifier, a deadline and profit associated with it

  List<Job> jobs = Arrays.asList(
        new Job(1, 9, 15), new Job(2, 2, 2),
        new Job(3, 5, 18), new Job(4, 7, 1),
        new Job(5, 4, 25), new Job(6, 2, 20),
        new Job(7, 5, 8), new Job(8, 7, 10),
        new Job(9, 4, 12), new Job(10, 3, 5)
  );
}

但是，我想从用户输入中获取这个对象数组。当我打算这样做时，它给了我一个错误。

代码 :

Scanner scan = new Scanner(System.in);
int count = scan.nextInt();

int[][] arr = new int[count][3];

for(int i =0; i<count;i++){
   String[] arrNums = scan.nextLine().split(" ");

   arr[i][0] = Integer.parseInt(arrNums[0]);
   arr[i][1] = Integer.parseInt(arrNums[1]);
   arr[i][2] = Integer.parseInt(arrNums[2]);
}

List<Job> jobs = Arrays.asList(
   for(int i=0 ; i< count ; i++){
      new Job(arr[i][0], arr[i][1], arr[i][2]);
   }    
);

错误 :

Syntax error, insert ")" to complete MethodInvocationJava(1610612976)
Syntax error, insert ";" to complete LocalVariableDeclarationStatementJava(1610612976)

你能给我一个从用户输入的二维数组中添加对象作为列表的解决方案吗？

Answer 1

您也可以使用 bufferedReader 尝试这种方式,

InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader bufferedReader = new BufferedReader(isr);
List<Job> jobs = new ArrayList<>();
String x = bufferedReader.readLine();
String[] y;
int count = Integer.parseInt(x);

for (int i = 0; i < count; i++) {
    y = bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");
    jobs.add(new Job(
            Integer.parseInt(y[0]),
            Integer.parseInt(y[1]),
            Integer.parseInt(y[2])));
}