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();
    }

}