java：模拟队列操作

 1 import java.util.LinkedList;
 2 
 3 public class Myqueue {
 4 
 5     private LinkedList<Object> linkedList;
 6 
 7     public Myqueue() {
 8         linkedList = new LinkedList<>();
 9     }
10 
11     public void intoMyqueue(Object o) {
12         linkedList.add(o);
13     }
14 
15     public Object outMyqueue() {
16         int size = linkedList.size();
17 
18         if (size > 0)
19             return linkedList.remove(0);
20         else
21             return -1;
22     }
23     public int getSize() {
24         return linkedList.size();
25     }
26 
27 }