Dimension2

import java.util.AbstractMap.SimpleEntry;
import java.util.ArrayDeque;
import java.util.Deque;

public class Dimension2 {
  public static void main(String[] args) {
    int[][] a = {{1, 2}, {3, 4}, {5, 6}};
    Deque<SimpleEntry<Integer, Integer>> as =
      new ArrayDeque<SimpleEntry<Integer, Integer>>();
    for (int i = 0; i < a.length; i++) {
      as.offer(new SimpleEntry<Integer, Integer>(a[i][0], a[i][1]));
    }
    System.out.println(as);
    as.pollLast();
    System.out.println(as);
  }
}