java：模拟队列操作

 import java.util.LinkedList;

 public class Myqueue {

     private LinkedList<Object> linkedList;

     public Myqueue() {
         linkedList = new LinkedList<>();
     }

     public void intoMyqueue(Object o) {
         linkedList.add(o);
     }

     public Object outMyqueue() {
         int size = linkedList.size();

         if (size > 0)
             return linkedList.remove(0);
         else
             return -1;
     }
     public int getSize() {
         return linkedList.size();
     }

 }