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();
     }
 
 }