Convert int [][] into a list of custom Records

CustomRecordExample.kt

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class CustomRecordExample {

  // Your static nested class is defined here
  static class Record {
    int first;
    int second;
    int third;
    public Record(int first, int second, int third) {
      this.first = first;
      this.second = second;
      this.third = third;
    }

    @Override
    public String toString() {
        return "Record[" + first + ", " + second + ", " + third + "]";
    }
  }

  public static void main(String[] args) {
    int[][] sourceArray = {{10, 20, 30}, {40, 50, 60}, {70, 80, 90}};

    // Stream the 2D array and map each row to a new Record instance
    List<Record> recordList = Arrays.stream(sourceArray)
                                  .map(row -> new Record(row[0], row[1], row[2]))
                                  .collect(Collectors.toCollection(ArrayList::new));

    System.out.println(recordList);
    // Output: [Record[10, 20, 30], Record[40, 50, 60], Record[70, 80, 90]]
  }
}