Java中的循环队列怎么利用数组实现

//循环队列class CirQueue{ private int QueueSize; private int front; private int rear; private int[] queueList ;  public CirQueue(int QueueSize){  this.QueueSize = QueueSize;   queueList = new int[QueueSize];  front = 0;  rear = 0; }  //获取队列头元素 public int getQueueElement(){  //如果队列不为空，返回队头元素，否则抛出异常提示队列为空  int element = -1;  if(!isEmpty()){   element = queueList[front];   return element;  }  else {   System.out.println("队列为空");   return -1;  }   }  //出队 public int deQueue(){  int element = -1;  if(!isEmpty()){   element = queueList[front];   front =(front+1)%QueueSize;   return element;  }  else {   System.out.println("队列为空");   return -1;  }   }      //入队 public void enQueue(int element){  //如果队列未满，添加元素到队尾，否则提示队列已满  if(!isFull()){   queueList[rear] = element ;   rear = (rear+1)%QueueSize;     }  else {   System.out.println("队列已满");  } }  //判断队列是否为空 public boolean isEmpty(){  boolean b = false;  if(rear == front)   b = true;  return b; }   //判断队列是否已满 public boolean isFull(){  boolean b = false;  if((rear+1)%QueueSize == front)   b = true;  return b; }}