public class Example {
Stack<Integer> stack = new Stack<Integer>();
Queue<Stack<Integer>> queue = new Queue<Stack<Integer>>();


public static void main(String[] args){
Example test = new Example();
 test.makeQueue(4);
}


public Queue<Stack<Integer>> makeQueue(int n) {

for(int j = 0; j < n; j++){

      for(int i = 0; i < 5; i++){

         stack.push(i);
     }

    queue.enqueue(stack);

}

return queue;
}