cyclical buffer of bytes

/ Implement a cyclical buffer of bytes of fixed size n.

// Support the creation and enqueue/dequeue operations.

// The buffer is intended to be use in a high throughput environment.

import java.io.*;
import java.util.*;

/*
 * To execute Java, please define "static void main" on a class
 * named Solution.
 *
 * If you need more classes, simply define them inline.
 */

class Solution {
 
  int nums[];
  int head = 0;
  int size = 0;
  int count = 0;
 
  public Solution(int n) {
    this.size = n;
    this.nums = new int[n];
  }
 
  private void enque(int v) {
    if (count == size) {
      System.out.println("queue is full");
      return;
    }
    nums[(head + count) % size] = v;
    count++;
  }
 
  private int deque() {
    if (count == 0) {
      System.out.println("queue is empty");
      return 0;
    }
    int res = nums[head];
    head++;
    if (head == size) head = 0;
    count--;
    return res;
  }
 
  public static void main(String[] args) {
    Solution s = new Solution(2);
    s.enque(1);
    s.enque(2);
    System.out.println(s.deque());
    s.enque(3);
    System.out.println(s.deque());
    s.enque(4);
    System.out.println(s.deque());
    System.out.println(s.deque());
    System.out.println(s.deque());
  }
}